支持的水解硫催化剂的声化学制备
N A Dhas1, A Ekhtiarzadeh, K S Suslick
1School of Chemical Sciences, University of Illinois at Urbana-Champaign, 600 South, Mathews Avenue, Urbana, IL 61801, USA.
Journal of the American Chemical Society
|August 23, 2001
概括
声化学方法产生高活性和促进二硫化物 (MoS2) 催化剂在化上用于水解硫化 (HDS). 这些可重复使用的MoS2催化剂在从烯和二二二烯中去除硫方面表现出卓越的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
- 化学工程是化学工程的重要组成部分.
背景情况:
- 开发高效的水解硫化 (HDS) 催化剂对于石油炼油至关重要.
- 基于二硫化 (MoS2) 的催化剂在HDS应用中受到广泛研究.
- 声化学合成为催化剂制备提供了一条新的途径.
研究的目的:
- 为了合成Co和Ni,使用声化学方法在上促进了MoS2催化剂.
- 为了评估烯和二二二烯准备的催化剂的脱硫活性.
- 描述新型催化剂的结构和特性.
主要方法:
- 使用高强度超声波照射制备催化剂的声化学制备.
- 包括元素分析,XPS,SEM,TEM和XEDS在内的表征技术.
- 用烯和二二二烯进行化脱硫 (HDS) 活性测试.
主要成果:
- 电磁化学合成成功地在基支上生产了分层的六角形MoS2.
- 在Co-Mo-S/Al2O3,Ni-Mo-S/Al2O3和Co-Ni-Mo-S/Al2O3催化剂中,HDS活性极高.
- 在相同的条件下,活动比同等的商业催化剂大几倍.
- 在120小时的HDS后,MoS2层结构保持稳定,表明可重复使用性.
结论:
- 声化学制剂是生产高活性MoS2基HDS催化剂的有效方法.
- 推广的MoS2催化剂显示了深度脱硫工业应用的巨大潜力.
- 催化剂是稳定的和可重复使用的,提供经济和环境的好处.
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