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Citation: Xiao Feng-Shou, Shi Chuan-Sheng, Guo Xie-Xian. Formyl: An Intermediate for Formation of Oxygenates in CO Hydrogenation Over Supported RuCo Carbonyl Cluser-Derived Catalysts[J]. Acta Physico-Chimica Sinica, ;1993, 9(01): 56-62. doi: 10.3866/PKU.WHXB19930110 shu

Formyl: An Intermediate for Formation of Oxygenates in CO Hydrogenation Over Supported RuCo Carbonyl Cluser-Derived Catalysts

1.
Department of Chemsitry, Jilin University, Changchun 130023; Catalysis Research Center, Hokkaido University, Sapporo 060, Japan; National Laboratory for Catalysis, Dalian Institute of Chemical Physics, Dalian 116023

Received Date: 7 September 1991
Available Online: 15 February 1993

The reaction and adsorption of syngas and paraformaldehyde on Ru-Co/SiO_2 ca-talysts prepared from Ru-Co bimetallic carbonyl clusters have been investigated by infrared, mass spectroscopies. The spectra of reaction of CO+H_2 with Ru-Co/SiO_2 catalysts showed a band appearing at 1584 cm~(-1), which has a od relationship to the activity and selectivity for oxygenates in CO hydrogenation. Thus it was proposed that 1584 cm~(-1) is a possible intermediate to produce oxygenated products. Isotopic tracer studies of D_2 and ~(13)CO suggest that 1584 cm~(-1) can possibly be assigned to the formyl group, which is in od agreement with the adsorption of paraformaldehyde. The chemical trapping of 1584 cm~(-1) adspecies provided an evidence to demonstrate that 1584 cm~(-1) is attributed to formyl. The reaction of 1584 cm~(-1) species with H_2 produced CH_4 and CH_3OH, and the introduction of D_2 into 1584 cm~(-1) species resulted in the formation of CHD_3 and CHD_2OD.
- Ru-Co bimetallic carbonyl cluster; Oxygenates; CO hydrogenation; Surface formyl
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