کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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67733 | 48492 | 2007 | 5 صفحه PDF | دانلود رایگان |

The reaction of synthesis gas to liquefied petroleum gas (LPG) over Zn–Cr-based hybrid catalysts was systematically investigated in this paper. The results show that the synergistic effect, existed in the Zn–Cr-based methanol synthesis component and β zeolite, results in the high performance of hybrid catalysts for synthesis gas to LPG. Active metal Pd in the β zeolite mainly play the role of olefin hydrogenation, which promotes the reaction of the title-mentioned overall reaction. The ratio of SiO2/Al2O3 in Pd-β has a large influence on the stability of hybrid catalysts for syngas to LPG. As the SiO2/Al2O3 ratio increases, CO conversion slightly decreases, however, the catalytic stability of Zn–Cr-based hybrid catalysts is largely improved. The characterization results indicated that during the reaction, the decreasing of acidic sites is the main reason of catalyst deactivation.
More than sixty-five percent of CO conversion and >75% LPG selectivity in hydrocarbons could be kept during 150 h operation in the direct synthesis of LPG from syngas via methanol and dimethyl ether over Pd–Zn–Cr/Pd-β hybrid catalyst. Figure optionsDownload as PowerPoint slide
Journal: Journal of Molecular Catalysis A: Chemical - Volume 278, Issues 1–2, 14 December 2007, Pages 215–219