Author Archives: Carl Menning

Prof. Dion Vlachos is the Winner of the 2016 Catalysis Club of Philadelphia Award

Dion VlachosThe Catal­y­sis Club of Philadel­phia is pleased to announce Prof. Dion Vla­chos as the recip­i­ent of the 2016 Catal­y­sis Club of Philadel­phia Award, in recog­ni­tion of his long-stand­ing cre­ative tech­ni­cal con­tri­bu­tions, both the­o­ret­i­cal and exper­i­men­tal; advanc­ing the under­stand­ing of the mol­e­c­u­lar basis of het­ero­ge­neous catal­y­sis of com­plex sys­tems; and his lead­er­ship role at the Catal­y­sis Cen­ter for Ener­gy Inno­va­tion and Cen­ter for Cat­alyt­ic Sci­ence and Tech­nol­o­gy.

Prof. Vla­chos received his PhD form the Chem­i­cal Engi­neer­ing and Mate­ri­als Sci­ence Depart­ment, Uni­ver­si­ty of Min­neso­ta, where he stud­ied the struc­tures and dynam­ics of adsorbed phas­es and crys­tal sur­faces. He joined the Chem­i­cal Engi­neer­ing Depart­ment at the Uni­ver­si­ty of Mass­a­chu­setts in 1993 as an Assis­tant Pro­fes­sor and in 1998 became an Asso­ciate Pro­fes­sor at the depart­ment. In 2000, Dion joined the Depart­ment of Engi­neer­ing at the Uni­ver­si­ty of Delaware, where he cur­rent­ly holds a posi­tion as Eliz­a­beth Inez Kel­ley Pro­fes­sor of Chem­i­cal Engi­neer­ing.

Dion has pio­neered the work on devel­op­ment of mul­ti-scale mod­el­ing and apply­ing this approach to tech­no­log­i­cal­ly impor­tant prob­lems in ener­gy, catal­y­sis, bio­mass con­ver­sion, nan­otech­nol­o­gy and cel­lu­lar engi­neer­ing. His research has been adopt­ed by chem­i­cal indus­try in com­pa­nies, such as Cono­coPhillips, Prax­air, and Rohm and Haas, for chem­i­cal process­es design and emis­sions reduc­tion.

Dion’s research of bio­mass con­ver­sion, specif­i­cal­ly cat­alyt­ic trans­for­ma­tion of sug­ars into fuels and chem­i­cals, helped to advance the under­stand­ing of sug­ar chem­istry. His work on the elu­ci­da­tion of active species in HCl/CrCl3 involved in sug­ar trans­for­ma­tions result­ed in a high impact pub­li­ca­tion with a record num­ber of cita­tions. His the­o­ret­i­cal study of Sn-Beta cat­a­lyst for glu­cose iso­mer­iza­tion has found the active form of tin in the zeo­lite and revealed the impor­tance of neigh­bor­ing silanol groups for the selec­tiv­i­ty of the iso­mer­iza­tion reac­tion. Dion’s the­o­ret­i­cal work was lat­er con­firmed exper­i­men­tal­ly by Davis group in Cal­tech.

As the founder and direc­tor of the Catal­y­sis Cen­ter for Ener­gy Inno­va­tion (CCEI), Dion has shown an out­stand­ing lead­er­ship and obtained $29.5M in fund­ing over nine years. Through CCEI, he helped to nur­ture col­lab­o­ra­tions between research groups from lead­ing aca­d­e­m­ic insti­tu­tions. CCEI focus­es on the devel­op­ment of new catal­y­sis and process­es for bio­mass con­ver­sion to fuel and chem­i­cals.

Dion has pub­lished over 340 sci­en­tif­ic papers, which col­lec­tive­ly have over 9400 cita­tions. In the past few years, he has been pub­lish­ing over 30 research papers per year, which makes Dion one of the most pro­duc­tive catal­y­sis researchers.

Please join us in con­grat­u­lat­ing Dion on receiv­ing the 2016 Catal­y­sis Club of Philadel­phia award.

Past Recipients of the Award

1968 Adal­bert Farkas
1969 Charles J. Plank
1970 Paul H. Emmett
1971 G. Alex Mills
1972 Alfred E. Hirschler
1973 Paul B. Weisz
1974 Roland C. Hans­ford
1975 Paul Venu­to
1976 Heinz Heine­mann
1977 G.C.A. Schuit
1978 George W. Par­shall
1979 Alvin B. Stiles
1980 Abra­ham Schnei­der
1981 James F. Roth
1982 Robert Eis­chens
1983 Edward Rosin­s­ki
1984 James R. Katzer
1985 N.Y. Chen		1986 Bruce C. Gates
1987 James E. Lyons
1988 George Koko­tai­lo
1989 Mau­rice Mitchell, Jr.
1990 Wern­er O. Haag
1991 John A. Sofranko
1992 Fran Waller
1993 George Kerr
1994 Theodore A. Koch
1995 John N. Armor
1996 Mae Rubin
1997 Leo E. Manz­er
1998 Ray Gorte
1999 Anne M. Gaffney
2000 Hen­ry C. Foley
2001 Mark Barteau
2002 Steven D. Ittel
2003 Frank E. Herkes		2004 Jing­guang Chen
2005 Israel Wachs
2006 James Dumesic
2007 John Vohs
2008 David Olson
2009 Ted Oya­ma
2010 Chuck Coe
2011 Chun­shan Song
2012 Ros­tam Madon
2013 Daniel Resas­co
2014 Haiy­ing Chen
2015 Sourav Sen­gup­ta
2016 Dion Vla­chos
2017 Thomas Cola­cot
2018 Car­mo Pereira
2019 Fabio Ribeiro
2020 Raul F. Lobo
2021 Alan M. All­geier		2022 John R. Mon­nier
2023 Hasan Din­di

2015–2016 Meet­ing Program

Thurs­day, Sept. 17th, 2015Sourav SenguptaCatal­y­sis – An Indis­pens­able Tool
Sourav Sen­gup­ta, DuPont — 2015 CCP Award Win­ner
Abstract » | Announce­ment »
Thurs­day, Oct. 15th, 2015Matt NeurockEngi­neer­ing Mol­e­c­u­lar Trans­for­ma­tions over Sup­port­ed Met­al Cat­a­lysts for the Sus­tain­able Con­ver­sion of Bio­mass-Derived Inter­me­di­ates to Chem­i­cals and Fuels
Matt Neu­rock, Uni­ver­si­ty of Min­neso­ta
Abstract » | Announce­ment »


Brian MurphyStu­dent Speak­er
Selec­tiv­i­ty Con­trol in the Cat­alyt­ic Dehy­dra­tion of Methyl Lac­tate over Alka­li-Met­al Zeo­lites
Bri­an Mur­phy, Uni­ver­si­ty of Delaware |  Abstract »
Thurs­day, Nov. 19th, 2015John HolladayCatal­y­sis for renew­able fuels and chem­i­cals: Chal­lenges today and a look into where we are going
John Hol­la­day, PNNL
Abstract » | Announce­ment »
 
Grad­u­ate Stu­dent Poster Ses­sion
Thurs­day, Jan. 28th, 2016Jingguang ChenCO2 Con­ver­sion via Catal­y­sis and Elec­tro­catal­y­sis
Jing­guang Chen, Colum­bia Uni­ver­si­ty
Abstract » | Announce­ment »



Stu­dent Speak­er
Methanol reac­tiv­i­ty on nanocrys­talline anatase TiO2 thin films
David Ben­nett, Uni­ver­si­ty of Penn­syl­va­nia  |  Abstract »
Thurs­day, Feb. 18th, 2016Susannah ScottActi­va­tion and Self-Ini­ti­a­tion in the Phillips Eth­yl­ene Poly­mer­iza­tion Cat­a­lyst
Susan­nah Scott, UCSB
Abstract » | Announce­ment »

Stu­dent Speak­er
Eth­yl­ene Poly­mer­iza­tion by Sup­port­ed CrOx/SiO2 Cat­a­lysts:
Active Sites, Sur­face Inter­me­di­ates and Struc­ture-Activ­i­ty Rela­tion­ship
Anisha Chakrabar­ti, Lehigh Uni­ver­si­ty  |  Abstract »
 
Offi­cer Nom­i­na­tions
Thurs­day, Mar. 24th, 2016Bingjun XuIden­ti­fi­ca­tion of Active Sites for Methyl Lac­tate Dehy­dra­tion on Fau­j­a­sites
Bingjun Xu, UD
Abstract » | Announce­ment »
 
Offi­cer Nom­i­na­tions
Thurs­day, Apr. 21st, 2016TBA
Rob Rioux, PSU
 
Offi­cer Elec­tions
Thurs­day, May 12th, 2016Spring Sym­po­sium
Online Din­ner Reser­va­tion » | Direc­tions to Dou­ble Tree Hotel »

2015–2016 Officers

2015–2016 Officers

 

Chair
Tor­ren Carl­son
DuPont
Past Chair
Vladimiros Niko­lakis
W.L. Gore & Asso­ciates, Inc.
Chair-Elect
Anton Petushkov
Zeolyst Inter­na­tional
Trea­sur­er
Stephen Har­ris
Ren­matix
Sec­re­tary
Dan Slanac
DuPont
Pro­gram Chair
Alan All­geier
DuPont
Arrange­ments Chair
Alex Miro­nenko
Uni­ver­si­ty of Delaware
Direc­tor Mem­ber­ship
Eric Sacia
DuPont
Direc­tor Poster Ses­sion
Bingjun Xu
Uni­ver­si­ty of Delaware
Direc­tor Spon­sor­ship
Pran­it Metkar
DuPont
Web­mas­ter
Carl Men­ning
DuPont
Rep­re­sen­ta­tive to NACS
Dion Vla­chos
Uni­ver­si­ty of Delaware

Insight into Supported Metal Catalyst Stability by Quantifying Thermodynamic Interactions at the Solid-liquid Interface

Meeting Program — April 2016

 
Robert Rioux
Robert Rioux
Friedrich G. Helf­ferich Asso­ciate Pro­fes­sor of Chem­i­cal Engi­neer­ing
Penn­syl­va­nia State Uni­ver­si­ty

 
 
 
 
 
Abstract — Indus­tri­al appli­ca­tions of sup­port­ed late tran­si­tion met­al cat­a­lysts demand eco­nom­ic and scal­able syn­the­sis of these cat­a­lysts and cur­rent syn­thet­ic meth­ods lack pre­ci­sion in terms of size, shape and com­po­si­tion­al con­trol. More­over, sup­port­ed met­al cat­a­lysts suf­fer from poor sta­bil­i­ty, man­i­fest­ed in the form of sin­ter­ing (i.e., par­ti­cle growth) dur­ing reac­tion. The prop­er selec­tion of the oxide sup­port is of great impor­tance to ensure high dis­per­sion, activ­i­ty and selec­tiv­i­ty of the nanopar­ti­cles. The abil­i­ty of these sup­ports to enhance the dis­per­sion of the active met­al on their sur­face and con­trol their mor­phol­o­gy and sin­ter­ing kinet­ics is fun­da­men­tal­ly relat­ed to the nature and strength of the metal–metal oxide inter­ac­tion at the time of adsorp­tion. In this work, we have uti­lized isother­mal titra­tion calorime­try (ITC), a tech­nique capa­ble of quan­ti­fy­ing the ther­mo­dy­nam­ic descrip­tion (ΔG, ΔH, ΔS, n (sto­i­chiom­e­try)) of tran­si­tion met­al asso­ci­a­tion with a sup­port mate­r­i­al in a sin­gle exper­i­ment. After pro­vid­ing a brief intro­duc­tion to ITC and meth­ods of cat­a­lyst syn­the­sis, we will dis­cuss our results to quan­ti­fy the elec­tro­sta­t­ic inter­ac­tions between sol­vat­ed tran­si­tion met­al ions and charged ampho­teric met­al oxide sur­face. With­in this inter­ac­tion-type, we have stud­ied both refrac­to­ry and reducible met­al oxides. With a reducible met­al oxide, ceria, we demon­strate a poten­tial­ly new mech­a­nism of adsorp­tion, which may describe the suc­cess­ful sta­bi­liza­tion of noble met­als enabling main­te­nance of small sized nanopar­ti­cles com­pared to oth­er oxide sup­ports. In addi­tion to ITC, bulk uptake stud­ies have aid­ed in quan­ti­fy­ing the amount of met­al pre­cur­sor adsorbed on the sup­port sur­face and equi­lib­ri­um isotherms describe the uptake behav­ior and may pro­vide insight for pre­dict­ing long term sta­bil­i­ty of the nanopar­ti­cles. In the sec­ond half of the talk, we dis­cuss the adsorp­tion of tran­si­tion met­al oxide and hydrox­ide nanopar­ti­cles in the gal­leries of of Nb-based per­ovskites. ITC was used to quan­ti­ta­tive­ly rank the strength of adsorp­tion between the met­al nanopar­ti­cle and their propen­si­ty to sin­ter, as assessed by in-situ, high-tem­per­a­ture trans­mis­sion elec­tron microscopy. In both exam­ples, we will empha­size this ini­tial inter­ac­tion at the sol­id-liq­uid inter­face is impor­tant and con­veys a his­to­ry effect to the cat­a­lyst that is evi­dent dur­ing post-pro­cess­ing (dry­ing, cal­ci­na­tion and reduc­tion). The esti­mat­ed ther­mo­dy­nam­ic para­me­ters are expect­ed to quan­ti­fy the type of bond­ing at the inter­face, shed light on the bind­ing mech­a­nism and the growth and sin­ter­ing kinet­ics of sup­port­ed cat­a­lysts.
 
Biog­ra­phy — Robert (Rob) M Rioux is the Friedrich G. Helf­ferich Asso­ciate Pro­fes­sor of Chem­i­cal Engi­neer­ing at the Penn­syl­va­nia State Uni­ver­si­ty. Pri­or to join­ing the Penn­syl­va­nia State Uni­ver­si­ty in 2008, he was a Nation­al Insti­tutes of Health Post­doc­tor­al Fel­low at Har­vard Uni­ver­si­ty in the Depart­ment of Chem­istry and Chem­i­cal Biol­o­gy work­ing with Pro­fes­sor George White­sides. He received his Ph.D. in phys­i­cal chem­istry from the Uni­ver­si­ty of Cal­i­for­nia, Berke­ley in 2006 work­ing for Pro­fes­sor Gabor Somor­jai. He holds a B.S. and M.S. degree in chem­i­cal engi­neer­ing from Worces­ter Poly­tech­nic Insti­tute and the Penn­syl­va­nia State Uni­ver­si­ty, respec­tive­ly. Since join­ing the Penn. State fac­ul­ty, he has received a num­ber of awards, includ­ing a DARPA Young Fac­ul­ty Award, an Air Force Office of Sci­en­tif­ic Research Young Inves­ti­ga­tor Pro­gram Award, a NSF CAREER Award and a 3M Non-Tenured Fac­ul­ty Award. Research in his lab­o­ra­to­ry is cur­rent­ly spon­sored by NSF, DOE-BES, DARPA, AFOSR, AFRL, ACS-PRF and indus­try. His group’s cur­rent research focus is on the devel­op­ment of spa­tial­ly- and tem­po­ral­ly-resolved spec­tro­scop­ic tech­niques for imag­ing cat­alyt­ic chem­istry, sin­gle mol­e­cule meth­ods to under­stand sin­gle molecule/particle cat­alyt­ic kinet­ics and dynam­ics, elu­ci­dat­ing reac­tion mech­a­nisms in nanoscale sys­tems, includ­ing cat­a­lyst syn­the­sis, devel­op­ment of solu­tion calori­met­ric tech­niques to under­stand cat­alyt­ic process­es at the sol­id-liq­uid inter­face and the devel­op­ment of base-met­al cat­a­lysts for chemos­e­lec­tive chem­i­cal trans­for­ma­tions, includ­ing bio­mass to chem­i­cals con­ver­sion.

Identification of Active Sites for Methyl Lactate Dehydration on Faujasites

Meeting Program — March 2016

 
Bingjun Xu
Bingjun Xu
Chem­i­cal and Bio­mol­e­c­u­lar Engi­neer­ing
Uni­ver­si­ty of Delaware

 
 
 
 
 
 
 
 
Abstract — The dwin­dling reserve of crude oil and surge in nat­ur­al gas pro­duc­tion is rapid­ly chang­ing the mix of the car­bon source pool for the pro­duc­tion of fuels and chem­i­cal feed­stocks, and in turn cre­at­ing short­ages of sev­er­al key com­mod­i­ty chem­i­cals, e.g., propy­lene and buta­di­ene. The short­age of cer­tain com­mod­i­ty chem­i­cals, such as propy­lene, dri­ves up their prices, which in turn rais­es the cost of the down­stream chem­i­cals, such as acrylic acid. In this regard, lig­no­cel­lu­losic bio­mass derived feed­stocks, e.g., lac­tic acid and its esters, can poten­tial­ly bridge the gap. Cur­rent­ly, the com­mer­cial fer­men­ta­tion process using bio­mass-derived sug­ars can achieve a lac­tic acid (or its esters) yield of up to 90%. The absence of effi­cient and selec­tive cat­a­lyst for lac­tic acid dehy­dra­tion is the main miss­ing link in the pro­duc­tion of renew­able acrylic acid. The pri­ma­ry road­block for the ratio­nal design of cat­a­lysts for lac­tic acid dehy­dra­tion is the lack of the mech­a­nis­tic under­stand­ing of the nature of active sites and mech­a­nis­tic steps lead­ing to the selec­tive removal of the α-hydrox­yl group by dehy­dra­tion. Through kinet­ic and in-situ spec­tro­scop­ic inves­ti­ga­tions, we iden­ti­fy the dehy­dra­tion reac­tion pro­ceeds through dis­so­cia­tive adsorp­tion, acid-medi­at­ed dehy­dra­tion, and asso­cia­tive des­orp­tion steps. These mech­a­nis­tic insights will guide the design of selec­tive cat­a­lysts for this reac­tion.
 
Biog­ra­phy — Bingjun Xu is cur­rent­ly an Assis­tant Pro­fes­sor in the Depart­ment of Chem­i­cal and Bio­mol­e­c­u­lar Engi­neer­ing at Uni­ver­si­ty of Delaware. Dr. Xu received his Ph.D. in Phys­i­cal Chem­istry, advised by Prof. Friend, from Har­vard Uni­ver­si­ty in 2011. His the­sis estab­lished a mech­a­nis­tic frame­work for oxida­tive cou­pling reac­tions on Au sur­face through sur­face sci­ence stud­ies. Dr. Xu worked with Prof. Davis at Cal­tech on the devel­op­ment of a low tem­per­a­ture, man­ganese oxide based ther­mo­chem­i­cal cycle for water split­ting. Upon fin­ish­ing his post­doc, he joined Uni­ver­si­ty of Delaware in the fall of 2013. The cur­rent research inter­est of the Xu lab spans het­ero­ge­neous catal­y­sis, elec­tro­catal­y­sis and in-situ spec­troscopy.

Activation and Self-Initiation in the Phillips Ethylene Polymerization Catalyst

Meeting Program — February 2016

 
Susannah Scott
Susan­nah Scott
Dun­can and Suzanne Mel­lichamp Chair in Sus­tain­able Catal­y­sis
Chem­i­cal Engi­neer­ing and Chem­istry & Bio­chem­istry
Uni­ver­si­ty of Cal­i­for­nia, San­ta Bar­bara

 
 
 
 
 
 
 
 
Abstract — The mech­a­nism of spon­ta­neous acti­va­tion of the Phillips (Cr/SiO2) eth­yl­ene poly­mer­iza­tion cat­a­lyst in the absence of an alky­lat­ing co-cat­a­lyst is one of the longest-stand­ing prob­lems in het­ero­ge­neous catal­y­sis. Exper­i­men­tal and com­pu­ta­tion­al evi­dence has long point­ed to organochromium(III) active sites, and the prepa­ra­tion of graft­ed (SiO)2CrCH(SiMe3)2 sites by the reac­tion of Cr[CH(SiMe3)2]3 with par­tial­ly dehy­drox­y­lat­ed sil­i­ca sup­ports this con­clu­sion. How­ev­er, a plau­si­ble mech­a­nism for their for­ma­tion from the inter­ac­tion of chro­mate and eth­yl­ene alone remains to be found. A key issue is the incom­men­su­rate nature of the required redox reac­tions, since Cr(VI) must be reduced by an odd num­ber of elec­trons (three), while only closed-shell organ­ic oxi­da­tion prod­ucts are detect­ed. For the CO-reduced cat­a­lyst, Cr K-edge XANES, EPR and UV-vis spec­tro­scopies are con­sis­tent with ini­tial step-wise reduc­tion of Cr(VI) in two-elec­tron steps, first to Cr(IV), and ulti­mate­ly to Cr(II). Accord­ing to Cr K-edge EXAFS and UV-vis spec­troscopy, the Cr(II) sites have a coor­di­na­tion num­ber high­er than two, most like­ly through inter­ac­tion with neigh­bor­ing silox­ane oxy­gens. After removal of adsorbed CO, the Cr(II) sites react with eth­yl­ene in an over­all one-elec­tron redox reac­tion to gen­er­ate organochromium(III) sites and organ­ic rad­i­cals.
 
Biog­ra­phy — Scott received her B.Sc. in Chem­istry from the Uni­ver­si­ty of Alber­ta (Cana­da) in 1987, and her Ph.D. in Inor­gan­ic Chem­istry from Iowa State Uni­ver­si­ty in 1991, where she worked with J. Espen­son and A. Bakac on the acti­va­tion of O2 and organ­ic oxi­da­tion mech­a­nisms. She was a NATO Post­doc­tor­al Fel­low with Jean-Marie Bas­set at the Insti­tut de recherch­es sur la catal­yse (CNRS) in Lyon, France, before join­ing the fac­ul­ty of the Uni­ver­si­ty of Ottawa (Cana­da) in 1994 as an Assis­tant Pro­fes­sor of Chem­istry. She held an NSERC Women’s Fac­ul­ty Award, a Cot­trell Schol­ar Award, a Union Car­bide Inno­va­tion Award and was named a Cana­da Research Chair in 2001. She moved to the Uni­ver­si­ty of Cal­i­for­nia, San­ta Bar­bara in 2003, where she is cur­rent­ly holds the Dun­can and Suzanne Mel­lichamp Chair in Sus­tain­able Catal­y­sis, with joint fac­ul­ty appoint­ments in both Chem­i­cal Engi­neer­ing and Chem­istry & Bio­chem­istry. She directs the NSF-spon­sored Part­ner­ship for Inter­na­tion­al Research and Edu­ca­tion in Elec­tron Chem­istry and Catal­y­sis at Inter­faces, a col­lab­o­ra­tive research pro­gram involv­ing UCSB and sev­er­al promi­nent catal­y­sis research groups in Chi­na. Her research inter­ests include sur­face organometal­lic chem­istry, olefin poly­mer­iza­tion, nano­ma­te­ri­als, bio­mass con­ver­sion, envi­ron­men­tal catal­y­sis and the devel­op­ment of new kinet­ic and spec­tro­scop­ic meth­ods to probe reac­tion mech­a­nisms at sur­faces. In 2013, Scott became an Asso­ciate Edi­tor for the jour­nal ACS Catal­y­sis.

Call for Nominations of the 2016 Catalysis Club of Philadelphia Award

Each year the Catal­y­sis Club of Philadel­phia rec­og­nizes an out­stand­ing mem­ber of the catal­y­sis com­mu­ni­ty, who has made sig­nif­i­cant con­tri­bu­tions to the advance­ment of Catal­y­sis. Such advance­ment can be sci­en­tif­ic, tech­no­log­i­cal, or in orga­ni­za­tion lead­er­ship. The Award con­sists of a plaque and a $1,000 cash prize.
 
We appre­ci­ate your help in sub­mit­ting nom­i­na­tions. The entire nom­i­na­tion pack­age, includ­ing a resume and rec­om­men­da­tion let­ters, should not be more than 10 pages and should include a ½ page ten­ta­tive award announce­ment. The dead­line for the receipt of nom­i­na­tions is Thurs­day, March 31, 2016. Pri­or nom­i­na­tion pack­ages sent in 2014 or lat­er will auto­mat­i­cal­ly be con­sid­ered for the 2016 Award.
 
Nom­i­na­tion let­ters along with sup­port­ing mate­ri­als should be emailed to vnikolak@​wlgore.​com
 
Vladimiros Niko­lakis
W.L. Gore and Asso­ciates Inc.
101 Lewisville Rd.
Elk­ton, MD 21921
 

Past Recipients of the Award

1968 Adal­bert Farkas
1969 Charles J. Plank
1970 Paul H. Emmett
1971 G. Alex Mills
1972 Alfred E. Hirschler
1973 Paul B. Weisz
1974 Roland C. Hans­ford
1975 Paul Venu­to
1976 Heinz Heine­mann
1977 G.C.A. Schuit
1978 George W. Par­shall
1979 Alvin B. Stiles
1980 Abra­ham Schnei­der
1981 James F. Roth
1982 Robert Eis­chens
1983 Edward Rosin­s­ki
1984 James R. Katzer
1985 N.Y. Chen		1986 Bruce C. Gates
1987 James E. Lyons
1988 George Koko­tai­lo
1989 Mau­rice Mitchell, Jr.
1990 Wern­er O. Haag
1991 John A. Sofranko
1992 Fran Waller
1993 George Kerr
1994 Theodore A. Koch
1995 John N. Armor
1996 Mae Rubin
1997 Leo E. Manz­er
1998 Ray Gorte
1999 Anne M. Gaffney
2000 Hen­ry C. Foley
2001 Mark Barteau
2002 Steven D. Ittel
2003 Frank E. Herkes		2004 Jing­guang Chen
2005 Israel Wachs
2006 James Dumesic
2007 John Vohs
2008 David Olson
2009 Ted Oya­ma
2010 Chuck Coe
2011 Chun­shan Song
2012 Ros­tam Madon
2013 Daniel Resas­co
2014 Haiy­ing Chen
2015 Sourav Sen­gup­ta
2016 Dion Vla­chos
2017 Thomas Cola­cot
2018 Car­mo Pereira
2019 Fabio Ribeiro
2020 Raul F. Lobo
2021 Alan M. All­geier		2022 John R. Mon­nier
2023 Hasan Din­di