New ZnCe catalyst encapsulated in SBA-15 in the production of 1,3-butadiene from ethanol

来源 :中国化学快报(英文版) | 被引量 : 0次 | 上传用户:xiaosun988
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
ZnO-CeO2/SBA-15 catalysts were prepared by two kinds of solid-state grinding method and used for the production of 1,3-butadiene (1,3-BD) from ethanol. A mixture of SBA-15 (with or without organic template) and metal precursors were ground in solid-state. The obtained catalysts were characterized by TG, N2 adsorption-desorption, TEM, XRD, Py-FTIR and NH3-TPD techniques. Superior dispersion of metal oxides and more exposed acid sites were achieved on the catalyst 10Zn1Ce5-AS with the presence of organic template in SBA-15 during the solid-state grinding process. The catalytic performance was evaluated in a fixed-bed reactor and a 1,3-butadiene selectivity of as high as 45% is achieved. This is attributed to the coupling effect of Zn and Ce species in the mesopores of SBA-15, in which Zn promotes ethanol dehydrogenation and Ce enhances aldol-condensation, respectively. Additionally, solvent-free method inspires new catalyst synthesis strategy for the production of 1,3-butadiene from ethanol.
其他文献
《素问· 气交变大论篇》主题是以五运之气的太过不及和德化政令等变化,论述自然环境对疾病和事物的影响及关联.我们从三个方面对《素问· 气交变大论篇》进行探讨:①岁运太
Developing low-cost and high performance catalysts to replace precious metal based catalysts for oxygen reduction reaction (ORR) is one of the most feasible way
基于阴阳气化的思维,以六经之气升降气机为角度,从“欲解”时态探析《伤寒论》阴阳六经病证的升降病机演变及证治方药.文章先从元气与阴阳之气、阴阳之气与升降制化、升降失
研究刘完素火热论思想的形成与发展,阐发其对中医传承与创新的启示意义.首先论证了刘完素火热论的形成路径,主要包含自身实践、汇集经典、融合理学等不同方面;其次从金元医家
随着宋明理学的兴起,宋以后医学学理呈现了鲜明的哲学化取向,脏腑逐渐脱离了实体的存在意义而概念化、形上化.在肾藏象体系中,肾脏逐步被命门所取代,主要表现在肾功能的形上
Surface chemical properties of supports have an important influence on active sites and their catalytic behavior. Here, we fabricated a series of cobalt-based c
“舌为心之窍”理论来源于《黄帝内经》的窍脏相关论,亦称“心开窍于舌”.心的生理功能与病理变化与舌密切相关.舌作为心的官窍,在经脉上与心相连;舌通过产生言语来表达心声,
Nitrogen doping is a promising way to modulate the electrical properties of graphene to realize graphene-based electronics and promise fascinating properties an
Carbon dots (CDs) with multi-color emissive properties and a high photoluminescent quantum yield (PLQY) have attracted great attention recently due to their pot
The toxic organic dye contaminants in wastewater are extremely harmful to the ecosystem. Surface enhanced Raman scattering (SERS) is a technique with high sensi