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题名: Effect of Pd on catalytic performance of Zr-Mn-K catalyst for CO hydrogenation to methanol and isobutanol
作者: He, DP;  Ding, YJ;  Yin, HM;  Zhu, HJ;  Xiong, JM;  Luo, HY
关键词: palladium ;  zirconium ;  manganese ;  potassium ;  carbon monoxide ;  hydrogenation ;  methanol ;  isobutanol
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2003-09-01
卷: 24, 期:9, 页:658-662
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: The influence of Pd on the catalytic performance of Zr-Mn-K catalyst for the selective synthesis of methanol and isobutanol from syngas was investigated. Compared with Zr-Mn-K catalyst, the Pd-promoted Zr-Mn-K catalyst significantly improved the reaction activity. Under the reaction conditions of SV = 10000 h(-1), p = 8.0 Mpa and T = 673 K, the space time yield of alcohols increased greatly from 122.8 to 232.6 g/(kg-h) when 1.5% Pd (Pd(NO3)(2) as precursor) was addedd into the Zr-Mn-K catalyst, and the selectivity for isobutanol increased from 15.5% to 21.7%. However, the catalytic activity and selectivity for isobutanol greatly decreased when the Pd loading exceeded 1.5%. The influence of the reaction conditions was also investigated. The reaction conditions of 15000 h(-1), higher pressure and 673 K are optimum for isobutanol synthesis from CO hydrogenation. The chemisorption of H-2 and CO on Zr-Mn-K and Pd/Zr-Mn-K catalysts revealed that H-2 and CO uptakes on Pd/Zr-Mn-K catalyst are higher than those on Zr-Mn-K catalyst. The higher H-2 and CO uptakes on Pd/Zr-Mn-K catalyst would be in favor of enhancement in the rate of methanol and isobutanol synthesis. The uptakes of H-2 and CO decreased with Pd loading in excess of 1.5%, so that the space time yield of methanol and isobutanol decreased.
关键词[WOS]: SYNGAS
语种: 英语
WOS记录号: WOS:000185982100006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138303
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
He, DP,Ding, YJ,Yin, HM,et al. Effect of Pd on catalytic performance of Zr-Mn-K catalyst for CO hydrogenation to methanol and isobutanol[J]. CHINESE JOURNAL OF CATALYSIS,2003,24(9):658-662.
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