One-Step Carbothermal Reduction Synthesis of Metal-Loaded Biochar Catalyst for In Situ Catalytic Upgrading of Plastic Pyrolysis Products
One-Step Carbothermal Reduction Synthesis of Metal-Loaded Biochar Catalyst for In Situ Catalytic Upgrading of Plastic Pyrolysis Products
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一步碳热还原合成载金属生物炭催化剂用于塑料热解产品的原位催化升级
DOI：
10.1021/acssuschemeng.2c05804
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发表时间：
2022-12
期刊：
影响因子：
--
通讯作者：
Liangliang Fan
中科院分区：
文献类型：
--
作者：
Pei Huang;Wenguang Zhou;Kuangli Jin;Yunpu Wang;Jun Qian;Lei Liu;Hongyu Peng;Jiabo Wu;Jinye Hu;Mengjiao Wang;Weixin Wang;Ting Luo;Liangliang Fan
采用一步碳热还原法制备了一种新型的生物炭负载金属催化剂，并将其用于塑料的催化裂解。采用XRD、FTIR、NH_3-TPR和TEM等手段对木质素、大豆秸秆和小球藻生物炭载体上负载不同金属（Cu、Fe、Ni和Ru）的催化剂进行了表征。零价金属纳米粒子，包括镍，铜，钌，和各种功能团上观察到的生物炭表面。结果表明，Ni/木质素生物炭对低密度聚乙烯（LDPE）具有显著的催化裂解效果，汽油烃（C4 ~ C12烃）的化学选择性达到76.2%.催化性能与Ru基催化剂相当，其贡献了85.6%的汽油烃。以LDPE、PP和PS为模拟物，Ni/木质素催化裂解废塑料，C4-C12烃类的选择性最高，为87.9%，苯、甲苯和二甲苯的产率为78.1mg/g。提出了与聚乙烯、聚丙烯和聚苯乙烯的长链自由基断裂以及分子的芳构化有关的机理。
A novel biochar-supported metal catalyst was prepared in this study using a one-step carbothermal reduction synthesis method for the catalytic pyrolysis of plastics. Several catalysts with different metals (Cu, Fe, Ni, and Ru) loaded on three biochar supports from lignin, soybean straw, andChlorella vulgariswere evaluated using XRD, FTIR, NH3-TPR, and TEM. Zerovalent metal nanoparticles, including Ni, Cu, and Ru, and various functional groups were observed on the biochar surface. The chemical selectivities of gasoline hydrocarbons (C4–C12hydrocarbons) reached 76.2% with a remarkable catalytic cracking effect of Ni/lignin biochar on low density polyethylene (LDPE). Catalytic performance was comparable to that of the Ru-based catalyst, which contributed to 85.6% of gasoline hydrocarbons. The Ni/lignin catalytic cracking of plastic waste simulated by LDPE, polypropylene (PP), and polystyrene (PS) showed a maximum selectivity of 87.9% for C4–C12hydrocarbons and yields of 78.1 mg/g for benzene, toluene, and xylene (BTX). The mechanism related to the cleavage of long chain radicals of polyethylene, polypropylene, and polystyrene as well as the aromatization of aliphatics were proposed.
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影响因子：
11.2
作者：
Xing Zhang;Kaige Wang;Jun-hao Chen;Lingjun Zhu;Shurong Wang
通讯作者：
Xing Zhang;Kaige Wang;Jun-hao Chen;Lingjun Zhu;Shurong Wang
影响因子：
5.7
作者：
Peng Jia;Juan Wang;Weiliang Zhang
通讯作者：
Peng Jia;Juan Wang;Weiliang Zhang
影响因子：
7.3
作者：
Pallassana, V;Neurock, M
通讯作者：
Neurock, M
影响因子：
8.8
作者：
Ming-Tong Yang;Yunchen Du;Wai-Chi Tong;Alex C. K. Yip;K. Lin
通讯作者：
Ming-Tong Yang;Yunchen Du;Wai-Chi Tong;Alex C. K. Yip;K. Lin
影响因子：
15.1
作者：
Linyao Ke;Yunpu Wang;Qiuhao Wu;Nan Zhou;Leilei Dai;Xiaojie Tian;Wanhao Huang;Yujie Peng;
通讯作者：
Linyao Ke;Yunpu Wang;Qiuhao Wu;Nan Zhou;Leilei Dai;Xiaojie Tian;Wanhao Huang;Yujie Peng;