X. Y. Han et al.
Table 1. Catalytic results of layered double hydroxides (LDHs) supported catalyst.
Catalyst T(K) CO conversion (%) STYROH Selectivity (wt.%) Alcohol distribution (wt.%)
(g/g/h) ROH CHn CO2 C1OH C2 + OH
CuFeMgAl
493 8.05 0.00 1.09 93.80 5.11 59.61 40.39
513 19.39 0.01 3.28 83.86 12.86 61.47 38.53
533 32.28 0.06 9.91 67.79 22.30 58.86 41.14
553 54.99 0.11 9.04 54.03 36.93 53.63 46.37
Reaction conditions: H2/CO = 2.0, GHSV = 5000 h−1, P = 4.0 MPa.
493 K to 9.91 w t.% at 533 K. And at 553 K the selectivity of alcohols slightly fell may be due to the sintering of
Cu.
4. Conclusion
In summary, this work confirmed that bimetallic highly dispersed Cu-base catalysts could be prepared via ther-
mal decomposition of layered double hydroxides precursors. This is attributed to the layered structure of hydro-
talcite which could efficiently inhibit the sintering of the Cu and Fe ions. Furthermore, at low temperature the
main products of the catalyst were alkanes and as temperature grows the selectivity of alcohols becomes higher.
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