Title: Formation of methanol and its derivatives from strongly adsorbed carbon dioxide
Abstract: It has previously been demonstrated that two types of strongly adsorbed CO/sub 2/ exist on the surface of the commercial copper-containing catalyst SNM-1. The high-temperature form (T/sub max/ = 300/sup 0/C) is formed as the catalyst is reduced with carbon monoxide. After workup of the reduced catalyst in H/sub 2/O, the TG spectrum shows a low-temperature form (T/sub max/ = 180/sup 0/C) in addition to residual high-temperature form. We have found that these adsorbed forms of CO/sub 2/ are converted to methanol and methyl formate upon treatment with H/sub 2/. At 120/sup 0/C only the low-temperature form of CO/sub 2/ was found to undergo hydrogenation, and CH/sub 3/OH was formed in the concentration of 0.7 ..mu..mole/g. At 220/sup 0/C the second form was also hydrogenated, giving methanol formation in amounts of ca. 5 ..mu..mole/g. It has thus been demonstrated that at least two pathways exist for the synthesis of methanol, starting with the two forms of adsorbed CO/sub 2/.
Publication Year: 1988
Publication Date: 1988-02-01
Language: en
Type: article
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