预先捕获CO2和化成甲醇在异质化和富含氨酸的催化系统上
Anthony E Szego1, Tamara L Church1,2, Zoltán Bacsik1
1Department of Materials and Environmental Chemistry, Stockholm University, 10691, Stockholm, Sweden.
ChemistryOpen
|June 1, 2023
概括
一种新方法使用氨基化二氧化和催化剂将二氧化碳 (CO2) 和 (H2) 转化为甲醇. 这种异质化系统,特别是二次胺,显示了甲醇生产的高效率.
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:
- 二氧化碳转化的一致催化剂在分离和回收过程中经常面临挑战.
- 开发高效的异质催化剂对于可持续的化学过程至关重要.
研究的目的:
- 开发一种异质化催化剂系统,用于用胺基预先捕获二氧化碳,并随后将二氧化碳化为甲醇.
- 为了研究氨基化二氧化支的性能,它与不同的氨基单体进行了功能化,用于催化.
主要方法:
- 氨基化的合成支持通过修改商业中孔与三个不同的氨基单体.
- 将Ru-MACHOTM催化剂固定在氨基基支上.
- 用传输电子显微镜 (TEM) 和固态核磁共振 (NMR) 谱学对催化剂复合材料的表征.
- 在155°C和特定H2/CO2压力下将二氧化碳化成甲醇时的催化性能评估.
- 使用气相红外光谱仪在现场监测异质气体-固体反应.
主要成果:
- 异质化催化剂系统证明了二氧化碳和二氧化有效地转化为甲醇.
- 用二次胺胺胺的催化剂复合物表现出高的周转数 (TON) 值.
- TEM和NMR分析为反应前后的催化剂结构提供了洞察力.
结论:
- 成功开发了一种强大且可回收的异质化催化剂系统,用于将二氧化碳化为甲醇.
- 在二氧化支上选择的氨化显著影响了催化活性,二次氨基是特别有效的.
- 这种方法为可持续的甲醇合成提供了对同质系统的有希望的替代方案.
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