FeTi methanation catalyst
- Brookhaven Natl. Lab. Assoc. Univ. Inc.
A homogeneous intermetallic compound obtained by arc-melting equimolar amounts of the component metals, was tested after crushing and thorough hydriding, in a gas-cycling reactor at 250/sup 0/-350/sup 0/C and 15.3 atm on 20 mole Vertical Bar3< CO/sub 2/-H/sub 2/ and 33 mole Vertical Bar3< CO-H/sub 2/ reaction mixtures. Both CO/sub 2/ and CO were reduced by hydrogen at Vertical Bar3: 180/sup 0/C via a catalytic process. The formation rate of methane, the main reaction product, from CO/sub 2/ was about ten times that observed in CO reduction. Both carbon oxides yielded small amounts (Vertical Bar3; 5Vertical Bar3<) of ethane; 2Vertical Bar3< methanol was produced in the reduction of CO/sub 2/ but not of CO. Apparently, greater amounts of methanol were originally formed from CO/sub 2/ but part of the alcohol interacted with the catalyst to form alkoxides, which then converted to CH/sub 4/ and CO. The reduction of CO/sub 2/ yielded also CO; its concentration, initially 10Vertical Bar3<, increased to a plateau value which was lower than the equilibrium CO concentration of the water gas shift reaction. Details of the catalyst activity and reaction mechanism were satisfactorily explained by the recently proposed Sapienza et al. ''oxide theory'' for Fischer-Tropsch and related processes.
- OSTI ID:
- 6883004
- Journal Information:
- ACS Symp. Ser.; (United States), Vol. 23:4
- Country of Publication:
- United States
- Language:
- English
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