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Catalytic oxidation of pentanethiol on basic nitrogen doped carbon hollow spheres derived from waste tires

Petroleum Science 2022年第4期19卷 1888-1896页

作者： Jing Luo Wen-Feng Zhang Yan-Chen Wei Ji-Xing Liu Chao Wang Yi-Ru Zou Hai-Tao Ju Li-Ping Mu Yan-Hong Chao Hong-Bing Ji Wen-Shuai Zhu School of Chemistry and Chemical Engineering Jiangsu UniversityZhenjiang212013JiangsuChina School of Materials Science and Engineering Jiangsu UniversityZhenjiang212013JiangsuChina School of the Environment and Safety Engineering Jiangsu UniversityZhenjiang212013JiangsuChina College of Chemical Engineering and Environment State Key Laboratory of Heavy Oil ProcessingChina University of Petroleum-BeijingChangping102249BeijingChina School of Chemistry Sun Yat-Sen UniversityGuangzhou510275GuangdongChina

A series of basic nitrogen doped carbon hollow spheres(p-N-C) catalysts derived from waste tires were prepared by a green, facile and environmental “leavening” strategy for the catalytic oxidation of pentanethiol. Compared to pristine carbon, the p-N-C has a higher surface curvature conducive to the enrichment of substrates, leading to an excellent catalytic performance. This increased surface curvature of p-N-C was fabricated on the synergistic effect of two foaming agents((NH4)2 C2 O4 and NaHCO3), and the released gas also endows the spherical shell of p-N-C with a hierarchical porous structure, promoting the accessibility of active sites with pentanethiol. Pyridine-like and pyrrolic-like nitrogen atoms were investigated as reactive sites on the p-N-C to accelerate the electron transfer from sulfur to active surface oxygen and enhance the adsorption/oxidation process. As a result, the optimal p-N-C catalyst exhibits superior adsorption and oxidation performance(99.9%) of pentanethiol, outperforming the “unleavened”catalyst(20.8%). This work offers a new avenue for the fabrication of highly efficient materials for the desulfurization of fuel.

关键词： Carbon hollow spheres Nitrogen-doping waste tires Leavening strategy Pentanethiol

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Surface Modification of Pyrolytic Carbon Black from waste tires and Its Use as Pigment for Offset Printing Ink

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Chinese Journal of Chemical Engineering 2006年第5期14卷 654-659页

作者：周洁王靖岱任晓红阳永荣蒋斌波 UNILAB Research Center for Chemical Reaction Engineering Department of Chemical Engineering Zhejiang University

Pyrolysis has the potential of transforming waste into valuable products. Pyrolytic carbon black (PCB) is one of the most important products resulting from the pyrolysis of used tires. One of the most significant applica-tions of modified pyrolytic carbon black is its use as pigment for offset printing ink to obtain high added values. Inverse gas chromatography (IGC) results show that a large quantity of inorganic matters and carbonaceous deposit are removed by treating the pyrolytic carbon black with nitric acid solution. Plenty of active sites originally occu-pied by inorganic ash and coke are recovered. The surface energy of pyrolytic carbon black (TWPC)modified by titanate-coupling agent-especially the specific interaction γ sspdetermined by the specific probe molecule, tolu-ene-shows the strong interaction between the TWPC and the synthetic resins. The offset printing ink performance confirms the IGC prediction. And TWPC has the great potential of applications in printing ink industry as pigment.

关键词： environmental engineering waste tires ink

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Activated carbon prepared from waste tire pyrolysis carbon black via CO_(2)/KOH activation used as supercapacitor electrode

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Science China(Technological Sciences) 2022年第10期65卷 2337-2347页

作者： HOU ShengPing ZHANG Da XIE ZhiPeng KANG Yao TANG ZhengGang DAI YongNian LEI Yong CHEN Jian LIANG Feng Faculty of Metallurgical and Energy Engineering Kunming University of Science and TechnologyKunming 650093China Fachgebiet Angewandte Nanophysik Institut für Physik&ZMN MacroNano(ZIK)Technische Universität IlmenauIlmenau 98693Germany Department of Materials Science and Engineering Sichuan University of Science and EngineeringZigong 643000China State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Kunming University of Science and TechnologyKunming 650093China

As the quantity of waste tires increases,more pyrolysis carbon black(CBp),a type of low value-added carbon black,is being ***,the application of CBp has been ***,it is necessary to identify and expand applications of *** work focuses on the preparation of activated carbon(AC)from CBp using the physicochemical activation of carbon dioxide(CO_(2))and potassium hydroxide(KOH).Thereafter,AC is applied to the electrode of the electrical double-layer capacitor(EDLC).The AC prepared by CO_(2)/KOH activation exhibited a hierarchical pore *** specific surface area increased from 415 to 733 m^(2)g^(−1),and in combination with low ash content of 1.51%,ensured abundant ion diffusion channels and active sites to store *** EDLC comprising the AC(AC-2)electrode prepared by excitation of CO_(2)(300 sccm)and KOH had a reasonable gravimetric specific capacitance of 192 F g^(−1)at 0.5 A g^(−1),and exhibited a good rate capability of 73%at 50 A g^(−1)in a three-electrode ***,the EDLC device comprising the AC-2 electrode delivered excellent cycling stability(capacitance retention of 106%after 10000 cycles at 2 A g^(−1)in a two-electrode system).Furthermore,a symmetric supercapacitor based on an AC electrode that exhibits a supreme energy density of 4.7 Wh kg^(−1)and a maximum power density of 6362.6 W kg^(−1)is demonstrated.

关键词： waste tires pyrolysis carbon black CO_(2)/KOH activation activated carbon electrical double-layer capacitor

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