合Cu/ZnO/ZrO2和H的二甲基乙烯合成SAPO-34系统:催化剂优化,技术经济和碳足迹分析
Jasan Robey Mangalindan1, Fatima Mahnaz1, Jenna Vito1
1Artie McFerrin Department of Chemical Engineering, Texas A&M University, 100 Spence Street, College Station, Texas 77843, United States.
概括
这项研究证明了将二氧化碳 (CO2) 和 (H2) 转化为二甲基以太 (DME) 的同时催化. 优化的催化剂显示出高的DME选择性,有可能使用绿色H2和捕获的CO2产生负碳足迹.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 催化剂是一种催化剂.
- 可持续化学 可持续化学
背景情况:
- 人为排放带来了环境挑战.
- 从二氧化碳和中生产二甲 (DME) 提供了一个可持续的替代方案.
- 使用双功能催化剂的并联催化是二氧化碳转化的一个有吸引力的途径.
研究的目的:
- 为了研究和优化二氧化碳化到DME的合催化剂.
- 通过动态建模和技术经济分析评估开发的催化工艺的工业适用性.
- 评估可持续DME生产的环境足迹和成本竞争力.
主要方法:
- 优化Cu-ZnO-ZrO2 (CZZ) 合成条件,以提高甲醇 (MeOH) 的生产率.
- 合优化了CZZ与SAPO-34用于CO2转换为DME.
- 动力建模用于扩展到工业化堆反应堆.
- 技术经济分析 (TEA) 和摇篮到大门的环境足迹评估.
主要成果:
- 优化的CZZ催化剂 (CZZ-611) 实现了高的MeOH生产率.
- CZZ/SAPO-34合催化剂达到20%的二氧化碳转化率和56%的DME选择性.
- TEA指出原材料成本,特别是2,是主要的成本驱动因素.
- 通过使用绿色H2和直接捕获CO2的空气,可以实现负碳足迹.
结论:
- 双重催化是可持续DME生产的一个有希望的方法.
- 与化石燃料的成本竞争力需要进一步优化,特别是在H2成本方面.
- 利用绿色H2和捕获的CO2可以导致对环境有益的DME生产.
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