Calendar

Sep
30
Sun
2012
Monination for the Paul H. Emmett Award
Sep 30 all-day

The Paul H. Emmett Award in Fun­da­men­tal Catal­y­sis is spon­sored by the Grace Davi­son oper­at­ing seg­ment of W.R. Grace & Co. It is admin­is­tered by The Catal­y­sis Soci­ety and is award­ed bien­ni­al­ly in odd num­bered years, gen­er­al­ly at the North Amer­i­can meet­ing of The Catal­y­sis Soci­ety, where the awardee will be asked to give a ple­nary lec­ture. The award con­sists of a plaque and a prize of $5,000. An addi­tion­al $500 is avail­able for oth­er­wise unre­im­bursed trav­el expens­es.

The pur­pose of the Award is to rec­og­nize and encour­age indi­vid­ual con­tri­bu­tions in the field of catal­y­sis with empha­sis on dis­cov­ery and under­stand­ing of cat­alyt­ic phe­nom­e­na, pro­pos­al of cat­alyt­ic reac­tion mech­a­nisms and iden­ti­fi­ca­tion of and descrip­tion of cat­alyt­ic sites and species.

Selec­tion of the Award win­ner will be made by a com­mit­tee of renowned sci­en­tists and engi­neers appoint­ed by the Pres­i­dent of The North Amer­i­can Catal­y­sis Soci­ety. Selec­tion shall be made with­out regard for sex, nation­al­i­ty or affi­I­ia­tion. The award win­ner must not have turned 46 on April 1st of the award year, thus nom­i­na­tion doc­u­ments should indi­cate the age and birth date of the nom­i­nee. [The next award is the 2013 Award year for this Emmett Award (nom­i­na­tions due by Sep­tem­ber 30, 2012). Thus, nom­i­nees should not yet be 46 on April 1, 2013.) Posthu­mous awards will be made only when knowl­edge of the awardee’s death is received after announce­ment of the Award Committee’s deci­sion. Nom­i­na­tions for the Award should present the nominee’s qual­i­fi­ca­tions, accom­plish­ments, birth­date, and biog­ra­phy. A crit­i­cal eval­u­a­tion of the sig­nif­i­cance of pub­li­ca­tions and patents should be made as well as a state­ment of the par­tic­u­lar contribution(s) on which the nom­i­na­tion is based. Nom­i­na­tion doc­u­ments should be sub­mit­ted in one com­plete pack­age to the Pres­i­dent of the Soci­ety along with no more than two sec­ond­ing let­ters.

Selec­tion of the 2013 Emmett Award win­ner will be made by a com­mit­tee of renowned sci­en­tists and engi­neers appoint­ed by the Pres­i­dent of The North Amer­i­can Catal­y­sis Soci­ety. Nom­i­na­tion pack­ages for the Award must be received by 30 Sep­tem­ber 2012.

All nom­i­na­tion pack­ages (one ELECTRONIC COPY) for the Emmett Award should be should be sent to Enrique Igle­sia, Pres­i­dent, North Amer­i­can Catal­y­sis Soci­ety; at iglesia@​berkeley.​edu. Receipt of any nom­i­na­tion, will be con­firmed by an email mes­sage sent to any nom­i­na­tor.

Oct
18
Thu
2012
CCP Poster Sesion
Oct 18 @ 5:00 pm – 6:30 pm

Down­load Poster Abstracts:

CCP Monthly Meeting
Oct 18 @ 7:00 pm – Oct 18 @ 8:30 pm

 
Per­va­sive­ness of Sur­face Met­al Oxide Phas­es In Mixed Oxide Cat­a­lysts
Israel E. Wachs
Lehigh Uni­ver­si­ty, Beth­le­hem, PA

Abstract — Mixed oxide cat­alyt­ic mate­ri­als pos­sess two or more met­al oxide com­po­nents as found in bulk mixed met­al oxides (sto­i­chio­met­ric oxides as well as sol­id solu­tions), poly­oxo meta­lates (POMs), mol­e­c­u­lar sieves, zeo­lites, clays, hydro­tal­cites and sup­port­ed met­al oxides. Although it is now well estab­lished that two-dimen­­sion­al sur­face met­al oxide phas­es are present for sup­port­ed met­al oxides on tra­di­tion­al sup­ports (e.g., Al2O3, TiO2, ZrO2, SiO2, etc.), it is not cur­rent­ly appre­ci­at­ed that such sur­face met­al oxide species or phas­es are also present for oth­er types of mixed oxides. For exam­ple, recent sur­face analy­ses have demon­strat­ed that sto­i­chio­met­ric bulk mixed met­al oxides also pos­sess sur­face met­al oxide phas­es that con­trol their cat­alyt­ic activ­i­ty. For exam­ple, the cat­alyt­ic active sites for methanol oxi­da­tion to formalde­hyde over the bulk Fe2(MoO4)3 mixed oxide cat­a­lyst are sur­face MoOx species and not the bulk Fe2(MoO4)3 phase as pre­vi­ous­ly thought in the catal­y­sis lit­er­a­ture. The nanome­ter sized clus­ters in POMs also pos­sess sur­face species when a sec­ond met­al oxide com­po­nent is intro­duced (e.g., H3+xPW12-xMxO40). Depo­si­tion of met­al oxides into mol­e­c­u­lar sieves, zeo­lites, clays and hydro­tal­cites also results in the met­al oxide addi­tive usu­al­ly being present as sur­face met­al oxide species that are the cat­alyt­ic active sites for many redox and acid reac­tions. The for­ma­tion of these sur­face met­al oxide phas­es is dri­ven by their low sur­face free ener­gy and low Tam­mann tem­per­a­ture for many met­al oxides of inter­est in catal­y­sis (e.g., VOx, MoOx, CrOx, ReOx, WOx, etc.).