Maintenance work is planned for Thursday 31st August 2023 from 11:00 đồ sộ 12:00 (BST).
Bạn đang xem: benzen h2
During this time the performance of our trang web may be affected - searches may run rẩy slowly and some pages may be temporarily unavailable. If this happens, please try refreshing your trang web browser or try waiting two đồ sộ three minutes before trying again. We apologise for any inconvenience caused and thank you for your patience.
* Corresponding authors
b University of Chinese Academy of Sciences, Beijing 100039, P.. R. China
c Dalian National Laboratory of Clean Energy, Chinese Academy of Sciences, Dalian, P.. R. China
The increase in the CO2 concentration in the atmosphere has caused a serious global climate problem. Aromatics are important intermediates in chemical production, and by utilizing CO2 in aromatic synthesis not only the effective utilization of CO2 can be realized, but also carbon emission reduction can be effectively achieved. Herein, a bifunctional catalyst prepared by physically mixing Y-doped ZnZrOx metal oxide with the zeolite ZSM-5 was applied đồ sộ the synthesis of toluene and xylene by the alkylation of benzene using CO2 and H2. The bifunctional catalyst Y0.1/ZSM-5 showed the best reaction performance. 17.3% conversion of CO2, 30.8% conversion of benzene, and 71.6% selectivity of toluene and xylene were achieved. And 96.8% of the liquid-phase products were toluene and xylene. Based on the CO2-TPD, H2–D2 exchange, H2-TPR, EPR, XPS, and in situ DRIFTS results, a small amount of Y doping can effectively increase more oxygen vacancies on the surface of ZnZrOx đồ sộ promote CO2 adsorption and activation. The activation of hydrogen was enhanced resulting from Y–Zn interactions. In the reaction pathway, Y doping accelerated the conversion of CO2 đồ sộ HCOO* species đồ sộ promote the reaction process, allowing more methanol đồ sộ participate in the benzene alkylation reaction and further improving the CO2 and benzene conversion.
- Article type
- 27 Oct 2022
- 24 Nov 2022
- First published
- 24 Nov 2022
Xem thêm: fe(oh)3 t°
New J. Chem., 2023,47, 609-617
Alkylation of benzene using CO2 and H2 over ZnZrOx/ZSM-5: the effect of Y doping
G. Bian, P.. Niu, L. Jia, H. Guo and D. Li, New J. Chem., 2023, 47, 609 DOI: 10.1039/D2NJ05267A
To request permission đồ sộ reproduce material from this article, please go đồ sộ the Copyright Clearance Center request page.
If you are an author contributing đồ sộ an RSC publication, you tự not need đồ sộ request permission provided correct acknowledgement is given.
If you are the author of this article, you tự not need đồ sộ request permission đồ sộ reproduce figures and diagrams provided correct acknowledgement is given. If you want đồ sộ reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go đồ sộ the Copyright Clearance Center request page.
Xem thêm: mg + feso4
Read more about how đồ sộ correctly acknowledge RSC nội dung.