CO<sub>2</sub>催化合成衍生柴油的基础研究

李函霏; 吴畏; 白露露

doi:10.13205/j.hjgc.202209001

CO₂催化合成衍生柴油的基础研究

doi: 10.13205/j.hjgc.202209001

东北大学冶金学院资源与环境系, 沈阳 110819

基金项目:

国家自然科学基金“生活垃圾催化气化合成衍生燃油机理及二次污染发生特性研究”(51478092)

详细信息

作者简介:
李函霏(1993-),女,硕士,主要研究方向为固体废弃物处理与资源化技术。672048999@qq.com

通讯作者:
吴畏(1967-),男,副教授,主要研究方向为固体废弃物处理与资源化技术。wuwei@mail.neu.edu.cn

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出版历程
- 收稿日期: 2022-02-16
- 网络出版日期: 2022-11-09

FUNDAMENTAL RESEARCH ON CO₂ CATALYTIC SYNTHESIS OF DERIVATIVE DIESEL

Department of Resources and Environment, School of Metallurgy, Northeastern University, Shenyang 110819, China

摘要

摘要: 为促进我国“双碳”政策的推行,拓展CO₂的循环利用技术,开展了CO₂合成柴油的实验探索,利用铁基催化剂,以CO₂作为原料,探讨了CO₂加氢合成衍生柴油的可行性研究。在科学验证CO₂合成衍生柴油可行性的基础上,进一步考察了催化剂载体的酸碱性、催化剂组元Fe含量以及助剂添加对催化活性的影响。研究表明:CO₂加氢的合成产物的主要组分及组分分布特点与商用柴油高度一致。以γ-Al₂O₃为载体负载铁基催化剂可有效促进CO₂的逆水煤气反应和芬顿反应;作为催化剂助剂,金属元素K的添加对提高催化活性有较好的辅助作用。反应温度和压力是该反应的可控因子,其中,压力为决定因素,当压力>1.6 MPa时,反应才可以在250℃以上的温度域顺利发生。此外,载体的酸碱性、催化组元Fe及助剂K含量对合成产物的组分分布情况及与柴油的相似度也具有重要影响。
- CO₂加氢 /
- 铁基催化剂 /
- 碳中和 /
- 碳氢化合物 /
- 衍生柴油
Abstract: To promote the implementation of China's Dual Carbon Goals policy and expand the recycling technology of CO₂, the experimental exploration of CO₂ synthesis of diesel was carried out in this paper. Using iron-based catalyst and CO₂ as the raw material, the feasibility study of CO₂ hydrogenation synthesis of diesel was discussed. Based on verifying the feasibility of CO₂ synthesis to derive diesel, we further investigated the effect of catalyst carrier's acidity and alkalinity, catalyst component Fe content and additive addition on catalytic activity. The research showed that the main components and component distribution characteristics of the synthesis products of CO₂ hydrogenation were highly consistent with those of commercial diesel. The iron-based catalyst supported by γ-Al₂O₃ could effectively promote the reverse water gas reaction of CO₂ and the Fenton reaction. As a catalyst promoter, the addition of potassium had a good auxiliary effect on improving the catalytic activity. The reaction temperature and pressure were the controllable factors of the reaction, and the pressure was the decisive factor. The study found that only when the pressure was higher than 1.6 MPa, the reaction smoothly occured in the temperature range above 250 ℃. In addition, the acidity and alkalinity of the carrier, the content of the catalytic component Fe and the auxiliary K had a crucial influence on the composition characteristics of the synthesized products and similarity with diesel.
- CO₂ hydrogenation /
- iron-based catalyst /
- carbon neutrality /
- hydrocarbon /
- derivative diesel

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