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.
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页码：1515 / 1524
页数：10
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