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350 results on '"Hou, Baolin"'

75. Cement Catalyzed Valorization of Rice Straw into Upgraded Bio-Oil and Fuel Gases Using Pyrolysis Reactions.

Author

Uddin, Ikram, Wang, Guijin, Gao, Deyang, Li, Ning, Hussain, Zahid, and Hou, Baolin

Subjects
RICE straw, GAS as fuel, CEMENT, AGRICULTURAL wastes, BIOMASS liquefaction, PYROLYSIS, CROP residues
Abstract

Rice straw is one of the major agricultural residues that is generated enormously in Asian countries. Thus, it is critical to develop an efficient process of converting this residue into valuable compounds in replacing fossil-based products. Herein, we developed an economically viable cement catalyst to pyrolyze the rice straw into bio-oil and fuel gas in a batch-type reactor. Under the optimized conditions, the maximum bio-oil yield of 41.07 wt.%, and gas yield of 30.53 wt.% along with a biochar yield of 28.41 wt.% is achieved at 600°C. The catalyst showed a considerable effect on the bio-oil composition. It improved hydrocarbons quantities while using the optimum cement dosage at 600°C, and enhanced H2 from 18.79% to 25.57. By further increasing the catalyst dosage to 15 wt.%, the H2 yield was enhanced to 28.35%. The BET specific surface area of char at the optimum temperature was 76.42 m2/g and fine pore size. Catalyst improved both the yield and quality of the bio-oil. The bio-oil quality was enhanced by lowering the oxygen contents to a smaller value as 7.0098% and no water at all. [ABSTRACT FROM AUTHOR]

Published
2022
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100. Intensified solar thermochemical CO2splitting over iron-based redox materials viaperovskite-mediated dealloying-exsolution cycles

Author

Hu, Yue, Wu, Jian, Han, Yujia, Xu, Weibin, Zhang, Li, Xia, Xue, Huang, Chuande, Zhu, Yanyan, Tian, Ming, Su, Yang, Li, Lin, Hou, Baolin, Lin, Jian, Liu, Wen, and Wang, Xiaodong

Abstract

Solar thermochemical CO2-splitting (STCS) is a promising solution for solar energy harvesting and storage. However, practical solar fuel production by utilizing earth-abundant iron/iron oxides remains a great challenge because of the formation of passivation layers, resulting in slow reaction kinetics and limited CO2conversion. Here, we report a novel material consisting of an iron-nickel alloy embedded in a perovskite substrate for intensified CO production via a two-step STCS process. The novel material achieved an unprecedented CO production rate of 381 mL g−1min−1with 99% CO2conversion at 850 °C, outperforming state-of-the-art materials. In situstructural analyses and density functional theory calculations show that the alloy/substrate interface is the main active site for CO2splitting. Preferential oxidation of the FeNi alloy at the interface (as opposed to forming an FeOxpassivation shell encapsulating bare metallic iron) and rapid stabilization of the iron oxide species by the robust perovskite matrix significantly promoted the conversion of CO2to CO. Facile regeneration of the alloy/perovskite interfaces was realized by isothermal methane reduction with simultaneous production of syngas (H2/CO = 2, syngas yield > 96%). Overall, the novel perovskite-mediated dealloying-exsolution redox system facilitates highly efficient solar fuel production, with a theoretical solar-to-fuel efficiency of up to 58%, in the absence of any heat integration.

Published
2021
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