欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
报道了一种HCl存在时温和条件下的乙烷氧化脱氢制乙烯催化转化新途径.研究发现,在多种金属氧化物催化剂中,CeO2呈现最佳乙烯生成的催化性能.与纳米粒子相比,具有棒状和立方体状形貌的CeO2纳米晶具有较高的乙烷转化率和乙烯选择性.以MnOx修饰CeO2可进一步提高催化性能.在8 wt%MnOx-CeO2催化剂上,723 K反应2 h时乙烷转化率和乙烯选择性分别为94%和69%.该催化剂性能稳定,反应100 h乙烯收率可保持在65%–70%.HCl的存在对乙烯的选择性生成起着至关重要的作用,一部分乙烯来自于氯乙烷的脱HCl反应.
英文摘要：
This article reports a new catalytic route for the oxidative dehydrogenation of ethane to ethylene in the presence of HCl at moderate temperatures. CeO2 was found to be the most efficient catalyst for the production of ethylene from the variety of metal oxides examined in this work. CeO2 nanocrys‐tals with rod and cube morphologies showed higher ethane conversions and ethylene selectivities than CeO2 nanoparticles. The modification of CeO2 by MnOx further enhanced the catalytic perfor‐mance. Ethane conversion of 94% and ethylene selectivity of 69% were obtained after 2 h of reac‐tion at 723 K over an 8 wt% MnOx-CeO2 catalyst. This catalyst was stable and the ethylene yield could be sustained at 65%–70% over 100 h of reaction. The presence of HCl played a key role in the selective production of C2H4, and some of the C2H4 was probably formed from chloroethane by de‐hydrochlorination.
同期刊论文项目
同项目期刊论文
Photocatalytic Conversion of Carbon Dioxide with Water into Methane: Platinum and copper(I) oxide co
Effect of Calcination Temperature and Pretreatment with Reaction Gas on Properties of Co/gamma-Al2O3
Selective conversion of cellobiose and cellulose into gluconic acid in water in the presence of oxyg
Development of Bifunctional Catalysts for the Conversions of Cellulose or Cellobiose into Polyols an
Mesoporous Zeolite-Supported Ruthenium Nanoparticles as Highly Selective Fischer-Tropsch Catalysts f
Direct transformation of cellulose into methyl and ethyl glucosides in methanol and ethanol media ca
Mechanistic aspects of photo-induced formation of peroxide ions on the surface of cubic Ln(2)O(3) (L
Nanocomposites of TiO2 and Reduced Graphene Oxide as Efficient Photocatalysts for Hydrogen Evolution
In Situ Raman and Pulse Reaction Study on the Partial Oxidation of Methane to Synthesis Gas over a P
Influence of Ni Chemical States on the Partial Oxidation Mechanism of Methane: An Energetics Analysi
Significant Synergistic Effect between Supported Ruthenium and Copper Oxides for Propylene Epoxidati
Selective transformation of syngas into gasoline-range hydrocarbons over mesoporous H-ZSM-5-supporte
Synthesis and Catalytic Performances of Mesoporous CeNiO Catalysts for the Oxidative Dehydrogenation
Infrared Spectroscopy Study of CO Adsorption on Rh-Mn/SiO2 Catalyst for C-2-Oxygenates Synthesis fro
Transformation of Methane to Propylene: A Two-Step Reaction Route Catalyzed by Modified CeO2 Nanocry
Effect of size of catalytically active phases in the dehydrogenation of alcohols and the challenging
Effects of polyvinylpyrrolidone on the preparation of supported La2O3 catalysts by a modified impreg
Base-Free Aerobic Oxidation of 5-Hydroxymethyl-furfural to 2,5-Furandicarboxylic Acid in Water Catal
Cs-substituted tungstophosphate-supported ruthenium nanoparticles as efficient and robust bifunction
MgO- and Pt-Promoted TiO2 as an efficient photocatalyst for the preferential reduction of carbon dio
Fluoride-treated H-ZSM-5 as a highly selective and stable catalyst for the production of propylene f
Active site and reaction mechanism for the epoxidation of propylene by oxygen over CuOx/SiO2 catalys
Synergetic effect of VOx and TeOx species in mesoporous SiO2 on selective oxidation of propane to ac
Carbon nanotube-supported Fe-Mn nanoparticles: A model catalyst for direct conversion of syngas to l
期刊信息
位置：