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Your search keyword '"Fu, Zaihui"' showing total 11 results
Start Over Author "Fu, Zaihui" Publisher royal society of chemistry (rsc)
11 results on '"Fu, Zaihui"'

2. Selective production of bio-based para-xylene over an FeOx-modified Pd/Al2O3 catalyst

Author

Meng Qingwei, Yuxue Xiao, Chao Zhang, Xiaoli Pan, Fu Zaihui, and Changzhi Li

Subjects
Xylene, Decarbonylation, Substrate (chemistry), engineering.material, Pollution, Combinatorial chemistry, Toluene, Catalysis, chemistry.chemical_compound, chemistry, engineering, Environmental Chemistry, Noble metal, Selectivity, Hydrodeoxygenation
Abstract

para-Xylene (PX) is a basic building block of polyethylene terephthalate, which is currently produced from petroleum resources. Developing a renewable route to PX is highly desirable to address both economic and environmental concerns. Several attempts used noble metal catalysts, e.g. Pd/Al2O3, to synthesize PX from biomass-derived 4-methyl-3-cyclohexene-1-carboxaldehyde (4-MCHCA), but suffered from a severe decarbonylation reaction, resulting in toluene as the main product. In this paper, we report an FeOx modification strategy to suppress the decarbonylation reaction on a Pd/Al2O3 catalyst, leading to a drastic shift in selectivity towards PX with a yield up to 81% via a cascade dehydroaromatization–hydrodeoxygenation (DHA–HDO) pathway. Characterization and control experiments revealed that the electron density of Pd sites decreased in an FeOx-modified Pd/Al2O3 catalyst compared to Pd/Al2O3, thus tuning the preferential adsorption mode of the substrate from η2-(C,O), the key transition state of the decarbonylation reaction, to the η1-(O) mode that favors the hydrodeoxygenation process. Notably, this designed catalyst is highly stable and is readily applicable in the selective synthesis of a broad range of desired aromatic chemicals via the same DHA–HDO pathway from cyclohex-3-enecarbaldehyde derivatives. Overall, this work develops a controllable catalyst modification strategy that tailors an efficient catalyst for petroleum-independent bio-PX synthesis.

Published
2020

9. Ionic liquid-functionalized biochar sulfonic acid as a biomimetic catalyst for hydrolysis of cellulose and bamboo under microwave irradiation

Author

Zhang, Chao, primary, Fu, Zaihui, additional, Liu, Ya Chun, additional, Dai, Baohua, additional, Zou, Yanhong, additional, Gong, Xinglang, additional, Wang, Yanlong, additional, Deng, Xiaolin, additional, Wu, Haitao, additional, Xu, Qiong, additional, Steven, Kirk R., additional, and Yin, Dulin, additional

Published
2012
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