通过对Cu修饰的α-MoC进行甲醇蒸汽改制,实现高效的几乎没有CO2的气生产
Wen Jiang1, Aonan Liu1, Ming Yao1
1School of Agricultural Engineering and Food Science, Shandong University of Technology Zibo 255000 China zhangyc@sdut.edu.cn fupengsdut@163.com.
RSC advances
|January 11, 2024
概括
研究人员开发了一种基于铜的新型催化剂,用于通过甲醇蒸汽改制 (MSR) 高效生产. 这种非贵金属催化剂在车载气应用中表现出卓越的性能.
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:
- 甲醇蒸汽改制 (MSR) 是车载气发电的一个关键技术.
- 为MSR开发高效的非贵金属催化剂至关重要,但具有挑战性.
- 贵金属催化剂表现出高性能,但价格昂贵且稀缺.
研究的目的:
- 通过控制碳化 (MoC) 阶段来提高MSR的催化性能.
- 研究MoC相对铜 (Cu) 分散和活性的影响.
- 开发一种高效的,非贵金属异质催化剂,用于生产.
主要方法:
- 用不同的MoC相 (α-MoC1-,Mo2C,MoO2) 进行Cu/MoC催化剂的系统合成和表征.
- 在350°C时对MSR的催化活性和选择性的评估.
- 用分散的Cu物种设计和测试一个 (Cu1-Cun) /α-MoC催化剂.
主要成果:
- /α-MoC催化剂在350°C时表现出极好的MSR性能.
- 实现了80%的选择性和0%的CO选择性.
- 的生产率为44.07 mmolgcat-1h-1,性能优于其他催化剂.
- (Cu1-Cun) /α-MoC设计增强了因最佳Cu分散而导致的催化活性.
结论:
- α-MoC1-阶段在分散MSR的活性铜物种方面非常有效.
- 开发的Cu/α-MoC催化剂为生产的贵金属催化剂提供了一个有希望的替代品.
- 优化金属支相互作用是设计高性能异质催化剂的关键.
相关概念视频
Reduction of Alkenes: Catalytic Hydrogenation
12.0K
Alkenes undergo reduction by the addition of molecular hydrogen to give alkanes. Because the process generally occurs in the presence of a transition-metal catalyst, the reaction is called catalytic hydrogenation.
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
12.0K
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
3.3K
Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
3.3K
Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation
7.7K
Introduction
Like alkenes, alkynes can be reduced to alkanes in the presence of transition metal catalysts such as Pt, Pd, or Ni. The reaction involves two sequential syn additions of hydrogen via a cis-alkene intermediate.
Like alkenes, alkynes can be reduced to alkanes in the presence of transition metal catalysts such as Pt, Pd, or Ni. The reaction involves two sequential syn additions of hydrogen via a cis-alkene intermediate.
7.7K
Reduction of Benzene to Cyclohexane: Catalytic Hydrogenation
4.6K
Unlike the easy catalytic hydrogenation of an alkene double bond, hydrogenation of a benzene double bond under similar reaction conditions does not take place easily. For example, in the reduction of stilbene, the benzene ring remains unaffected while the alkene bond gets reduced. Hydrogenation of an alkene double bond is exothermic and a favorable process. In contrast, to hydrogenate the first unsaturated bond of benzene, an energy input is needed; that is, the process is endothermic. This is...
4.6K
Alcohols from Carbonyl Compounds: Reduction
10.4K
Reduction is a simple strategy to convert a carbonyl group to a hydroxyl group. The three major pathways to reduce carbonyls to alcohols are catalytic hydrogenation, hydride reduction, and borane reduction.
Catalytic hydrogenation is similar to the reduction of an alkene or alkyne by adding H2 across the pi bond in the presence of transition metal catalysts like Raney Ni, Pd–C, Pt, or Ru. Aldehydes and ketones can be reduced by this method, often under mild to moderate heat (25–100°C) and...
Catalytic hydrogenation is similar to the reduction of an alkene or alkyne by adding H2 across the pi bond in the presence of transition metal catalysts like Raney Ni, Pd–C, Pt, or Ru. Aldehydes and ketones can be reduced by this method, often under mild to moderate heat (25–100°C) and...
10.4K
Limiting Reactant
59.0K
The relative amounts of reactants and products represented in a balanced chemical equation are often referred to as stoichiometric amounts. However, in reality, the reactants are not always present in the stoichiometric amounts indicated by the balanced equation.
59.0K


