One-Pot Synthesis of Nano CuO-ZnO Modified Hydrochar Derived from Chitosan and Starch for the H2S Conversion

Catalysts

Jiaming Mao¹  Rong Xue²  Chengxuan Zhou²  Xiaomin Lu³  Leilei Wang⁴  Liming Dong⁵  Yunqian Ma⁵  Lihua Zang⁵ 

[1] College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China;College of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Science), Jinan 250353, China;Department of Forest Biomaterials, North Carolina State University, Raleigh, NC 27695, USA;Ecology Institute of Shandong Academy of Sciences, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China;Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing 100048, China;

关键词: hydrochar;    adsorbent;    mixed metal oxides;    H₂S conversion;   

DOI  :  10.3390/catal11070767

来源: DOAJ

【 摘 要 】

A novel kind of hydrochar adsorbent, modified by CuO-ZnO and derived from chitosan or starch, was synthesized for H₂S adsorption. The prepared adsorbent was characterized by BET, XRD, EDX, SEM, and XPS. The results showed that the modified hydrochar contained many amino groups as functional groups, and the nanometer metal oxide particles had good dispersion on the surface of the hydrochar. The maximum sulfur capacity reached 28.06 mg/g-adsorbent under the optimized conditions. The amine group significantly reduced the activation energy between H₂S and CuO-ZnO conducive to the rapid diffusion of H₂S among the lattices. Simultaneously, cationic polyacrylamide as a steric stabilizer could change the formation process of CuO and ZnO nanoparticles, which made the particle size smaller, enabling them to react with H₂S sufficiently easily. This modified hydrochar derived from both chitosan and starch could be a promising adsorbent for H₂S removal.

【 授权许可】

Unknown