炭载Pt-Co-La催化甲基环己烷脱氢的研究

摘要采用浸渍法制备了负载在废轮胎热解炭（PTC）上的三金属体系催化剂(1Pt-1Co)-xLa，其中，Pt的负载量为0.2%，Pt-Co原子比为1∶1，La以不同原子比加入。N₂吸脱附、H₂-TPR、CO脉冲吸附对催化剂表征的结果表明，适量La的加入有利于提高活性组分的分散度，促进活性组分的还原，尤其是对Pt-Co的共还原作用具有一定的促进作用。催化甲基环己烷（MCH）脱氢反应的结果表明，La的加入显著提高了单、双金属催化剂的活性。

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	杨迎
	叶洪丽
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	刘双喜

关键词：甲基环己烷脱氢铂-钴-镧废轮胎热解炭

Abstract： In the present work, the Pt-Co-La catalysts supported on pyrolytic waste tire char (PTC) were prepared by impregnation method. The loading of Pt is 0.2%, Pt-Co-La atomic ratio is 1∶1:x (x=1—4). The characterization of N₂adsorptiondesorption, H₂-TPR and pulse CO chemisorption results showed that the addition of a moderate amount of La to the Pt-Co bimetallic catalyst was beneficial to reduce Pt and Co, and improve their dispersion. The activity of the catalysts for dehydrogenation of methylcyclohexane（MCH）at 300 ℃ was investigated. The results suggest that trimetallic catalysts 1Pt-1Co-xLa/PTC(x=1—3) exhibited the high activity, compared with Pt, Pt-Co and Pt-La supported on PTC.

Keywords： methylcyclohexane dehydrogenation platinum-cobalt-lanthanum pyrolytic waste tire char

Received 2013-01-16;

Fund:

国家自然科学基金青年科学基金项目（No. 21003077）。

Corresponding Authors: 刘双喜，电话：（022）23509005，E-mail: sxliu@nankai.edu.cn。 Email: sxliu@nankai.edu.cn

About author: 杨迎(1987-)，女，硕士研究生，现从事以废轮胎热解炭为载体的脱氢催化剂在有机液体储氢中的研究。

引用本文:

杨迎, 叶洪丽, 张翠, 刘双喜.炭载Pt-Co-La催化甲基环己烷脱氢的研究[J]. 化学工业与工程, 2014,31(1): 19-23

YANG Ying, YE Hong-Li, ZHANG Cui, LIU Shuang-Xi.Dehydrogenation of Methylcyclohexane over Pt-Co-La Catalysts Supported on Pyrolytic Waste Tire Char[J]. Chemcial Industry and Engineering, 2014,31(1): 19-23