在Ni-Ru异构结构中进行晶格-菌株工程,以实现有效的乙烯化对化乙烯的化
Yurui Fan1, Mingming Wang1, Zhisong Liu1,2
1School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
ACS nano
|July 26, 2024
概括
一种新的Ni-间接的Ru异构结构增强了乙烯化,用于乙烯单体 (VCM) 生产. 这种催化剂改善了C2H2的激活和稳定性,性能优于传统的催化剂.
科学领域:
- 催化剂是一种催化剂.
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- (HgCl2) 传统上用于通过乙烯化生产乙烯化单体 (VCM).
- 基于 (Ru) 的催化剂提供了一个有希望的替代品,但在乙 (C2H2) 激活和中间生成 (*CH2CH) 方面面临挑战.
- 优化催化剂电子和化学性能对于提高性能至关重要.
研究的目的:
- 开发一种高效和稳定的催化剂,用于乙烯化.
- 为了研究 (Ni) 间隙和状应变在基于Ru的催化剂中的作用.
- 为了改善乙激活和VCM形成途径.
主要方法:
- 使用格子-应变工程合成Ni-间接的Ru异构结构.
- 描述Ni-Ru/C催化剂的电子和化学特性.
- 在试点规模的乙烯化中对催化性能的评估.
主要成果:
- Ni-Ru/C异构结构表现出优化的电子特性,包括一个向上移动的d频段中心和电子移位.
- 尼的插入促进了C2H2和HCl的吸附,并促进了C2H2的激活.
- 催化剂在试点试验中实现了>99.2%的转化率和超过500小时的稳定性,超过了传统的Hg催化剂.
结论:
- 具有格子应变工程的Ni-间接Ru异构结构为VCM生产提供了卓越的催化活性和稳定性.
- 这种方法有效地解决了在乙烯化中C2H2激活和中间生成的挑战.
- 开发的催化剂为工业应用提供了基于的催化剂的可行和可持续的替代品.
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