The Dehydrogenation of Propane on Platinum–Tin Glass-Fiber Woven Catalysts


如何引用文章

全文:

开放存取 开放存取
受限制的访问 ##reader.subscriptionAccessGranted##
受限制的访问 订阅存取

详细

The reaction of propane dehydrogenation on platinum–tin catalysts supported onto different woven carriers (an aluminoborosilicate and two silica materials) was studied. It was found that the catalyst was rapidly deactivated by carbon deposits formed, and the rate of this reaction increased with the specific surface area of the glass-fiber woven material and the Pt content. It was established that the Pt: Sn ratio in surface platinum particles was about 6, and it increased to 39 after the reaction; this fact is indicative of a Sn loss, which led to an increase in the conversion of feed into carbon deposits that deactivated the catalyst. A mixture of propane and 5–10 vol % H2 should be used for the stabilization of the catalytic system; in this case, the negative effect of hydrogen on the yield of propylene was minimal. On the catalyst supported onto a silica carrier under optimum conditions (550°C; propane space velocity, 480 h–1), which correspond to minimum selectivity for the formation of carbon deposits, the yield of propylene was ~18%. The test glass-fiber woven catalyst was inferior to granulated platinum–tin catalysts in terms of catalytic activity; therefore, its use in the reaction of propane dehydrogenation is inexpedient.

作者简介

L. Didenko

Institute of Problems of Chemical Physics

编辑信件的主要联系方式.
Email: ludi@icp.ac.ru
俄罗斯联邦, Chernogolovka, Moscow oblast, 142432

T. Dorofeeva

Institute of Problems of Chemical Physics

Email: ludi@icp.ac.ru
俄罗斯联邦, Chernogolovka, Moscow oblast, 142432

L. Sementsova

Institute of Problems of Chemical Physics

Email: ludi@icp.ac.ru
俄罗斯联邦, Chernogolovka, Moscow oblast, 142432

P. Chizhov

Institute of Problems of Chemical Physics

Email: ludi@icp.ac.ru
俄罗斯联邦, Chernogolovka, Moscow oblast, 142432

E. Knerel’man

Institute of Problems of Chemical Physics

Email: ludi@icp.ac.ru
俄罗斯联邦, Chernogolovka, Moscow oblast, 142432

G. Davydova

Institute of Problems of Chemical Physics

Email: ludi@icp.ac.ru
俄罗斯联邦, Chernogolovka, Moscow oblast, 142432

补充文件

附件文件
动作
1. JATS XML

版权所有 © Pleiades Publishing, Ltd., 2018