Sachtler

Chen FI Y and Sachtler W M FI 1998 Activity and durability of Fe/ZSM-5 catalysts for lean burn NOx reduction in the presence of water vapor Catal. Today 42 73-83... 

Much work has been invested to reveal the mechanism by which propylene is catalytically oxidized to acrolein over the heterogeneous catalyst surface. Isotope labeling experiments by Sachtler and DeBoer revealed the presence of an allylic intermediate in the oxidation of propylene to acrolein over bismuth molybdate. In these experiments, propylene was tagged once at Ci, another time at C2 and the third time at C3. 

Some films containing deposited nickel together with copper were annealed at 500°C in order to ensure the homogenization of the alloys. After their cooling down to room temperature the X-ray diffraction patterns demonstrated phase segregation of the alloys similar to that described by Sachtler et al. (45). 

Arakawa H, Aresta M, Armor JN, Barteau MA, Beckman EJ, Bell AT, Bercaw JE, Creutz C, Dinjus E, Dixon DA, Domen K, DuBois DL, Eckert J, Fujita E, Gibson DH, Goddard WA, Goodman DW, Keller J, Kubas GJ, Kung HH, Lyons JE, Manzer LE, Marks TJ, Morokuma K, Nicholas KM, Periana R, Que L, Rostrup-Nielson J, Sachtler WHM, Schmidt LD, Sen A, Somorjai GA, Stair PC, Stults BR, Tumas W (2001) Chem Rev 101 953... 

Catalytic asymmetric hydrogenation is a relatively developed process compared to other asymmetric processes practised today. Efforts in this direction have already been made. The first report in this respect is the use of Pd on natural silk for hydrogenating oximes and oxazolones with optical yields of about 36%. Izumi and Sachtler have shown that a Ni catalyst modified with (i ,.R)-tartaric acid can be used for the hydrogenation of methylacetoacetate to methyl-3-hydroxybutyrate. The group of Orito in Japan (1979) and Blaser and co-workers at Ciba-Geigy (1988) have reported the use of a cinchona alkaloid modified Pt/AlaO.i catalyst for the enantioselective hydrogenation of a-keto-esters such as methylpyruvate and ethylpyruvate to optically active (/f)-methylacetate and (7 )-ethylacetate. 

Sachtler WMH. 1973. Surface composition of alloys in equilibrium, Le Vide 164 67. 

Sachtler WMH, Somoijai GA. 1983. Influence of ensemble size on CO chemisorption and catalytic n-hexane conversion by Au-Pt(l 11) bimetallic single-crystal surfaces. J Catal 81 77. 

Sachtler WMH. 1997. Factors influencing catalytic action—Ensemble and ligand effects in metal catalysis. In Ertl G, Kndzinger H, Weitkamp J, eds. Handbook of Heterogeneous Catalysis. Volume 3. Weinheim VCH-Wiley. 

Soma-Noto Y, Sachtler WMH. 1974. Infrared spectra of carbon monoxide adsorbed on supported palladium and palladium-silver alloys, J Catal 32 315. 

The significance and impact of surface science were now becoming very apparent with studies of single crystals (Ehrlich and Gomer), field emission microscopy (Sachtler and Duell), calorimetric studies (Brennan and Wedler) and work function and photoemission studies (M.W.R.). Distinct adsorption states of nitrogen at tungsten surfaces (Ehrlich), the facile nature of surface reconstruction (Muller) and the defective nature of the chemisorbed oxygen overlayer at nickel surfaces (M.W.R.) were topics discussed. 

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