Effects of metal-support interactions on the synthesis of methanol over palladium

Journal Article · Sat Aug 01 00:00:00 EDT 1981 · Journal of Catalysis

DOI:https://doi.org/10.1016/0021-9517(81)90341-9· OSTI ID:1077837

Ryndin, Yu. A. ^[1]; Hicks, R. F. ^[1]; Bell, A. T. ^[1]; Yermakov, Yu. I. ^[2]

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1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials and Molecular Research Division; Univ. of California, Berkeley, CA (United States). Dept. of Chemical Engineering
2. Inst. of Catalysis, Novosibirsk (Soviet Union)

In this paper, the synthesis of methanol and other products from CO and H₂ was studied over Pd catalysts prepared by adsorption of Pd(π-C₃H₃)₂ on MgO, ZnO, La₂O₃, γ-Al₂O₃, SiO₂, TiO₂, and ZrO₂ as well as over a SiO₂-supported Pd catalyst prepared from PdCl₂ and Pd black. Both the activity and selectivity of Pd were affected strongly by the nature of the support and the composition of the Pd precursor. The specific activity for methanol synthesis decreased in the order PdLa2O3 >> PdSiO2 [derived from PdCl₂] > PdZrO2 > PdZnO ≈ PdMgO > PdTiO₂ > PdAl2O3 ≈ PdSiO2 [derived from Pd(π-C₃H₅)₂] >> Pd black, while the specific activity for hydrocarbon synthesis decreased in the order PdTiO2 >≈ PdZrO2 > PdLa2O3 > PdAl2O3 ≈ PdSiO2 [derived from PdCl₂] >≈ PdSiO2 [derived from Pd(π-C₃3H₅)₂] ≈ Pd black >> PdMgO >≈ PdZnO. Dimethyl ether production was observed over four of the catalysts and the activity for formation of this product decreased in the order PdAl2O3 >> PdTiO2 >> PdMgO ≈ PdZrO2. Finally, the effects of support composition on the catalytic properties of Pd are discussed in the light of current ideas concerning metal-support interactions and the acid-base properties of the support.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
• DOE Contract Number: W-7405-ENG-48; 78-18989-BELL-ZF 04/80
• OSTI ID: 1077837
• Report Number(s): LBL-11603
• Journal Information: Journal of Catalysis, Vol. 70, Issue 2; ISSN 0021-9517
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY