IMPACT OF INDUCED PHASES IN PROMOTED PtSn/γ-Al2O3 CATALYSTS BY ALKALI EARTH ELEMENTS FOR THE DIRECT PROPANE DEHYDROGENATION

被引：0

作者：

Alhamed, Yahia A. ^{[1
]}

Ali, Arshid M. ^{[1
]}

Zahrani, Abdulrahim A. ^{[1
]}

Daous, Muhammad A. ^{[1
]}

Umar, Muhammed ^{[1
]}

Driss, Hafed ^{[1
]}

Podila, Seetharamulu ^{[1
]}

Pasupulety, Nagaraju ^{[1
]}

Zaman, Sharif F. ^{[1
]}

Petrov, Lachezar A. ^{[1
]}

机构：

[1] King Abdulaziz Univ, Fac Engn, Dept Chem & Mat Engn, POB 80204, Jeddah 21589, Saudi Arabia

来源：

COMPTES RENDUS DE L ACADEMIE BULGARE DES SCIENCES | 2017年 / 70卷 / 11期

关键词：

alkaline earth elements (AEE); Pt catalysts; propane dehydrogenation (PDH); ISOBUTANE DEHYDROGENATION; PT-SN/GAMMA-AL2O3; CATALYST; PROPYLENE; LI;

D O I：

暂无

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The aim of this study is to identify the induced phases formed after promotions of the PtSn/gamma-Al2O3 catalysts by Alkali Earth Elements (AEE), i.e. Mg, Ca, Sr, and Ba. The induced phases are responsible for the enhanced catalytic activity and selectivity of the PtSn/gamma-Al2O3 catalysts in the process of propane dehydrogenation. The catalysts were prepared by co-impregnation of alumina with Pt and AEE. Among studied catalysts, only PtSnCa/gamma-Al2O3 with optimum Ca loading of 1 wt% had shown essential improvement in the catalytic properties PtSn/gamma-Al2O3 system. This effect is a result of the formation of binary alloys PtSn, Pt2Al and CaPt2 that had also largely decreased the catalyst coking activity and increased the catalyst's thermal stability.

引用

页码：1515 / 1524

页数：10

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