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Preparation of mesoporous activated carbons from coal liquefaction residue for methane decomposition

Journal of Natural Gas Chemistry 2012年第6期21卷 759-766页

作者： Jianbo Zhang Lijun Jin Shengwei Zhu Haoquan Hu State Key Laboratory of Fine Chemicals Institute of Coal Chemical EngineeringSchool of Chemical EngineeringDalian University of TechnologyDalian 116024LiaoningChina

Mesoporous activated carbons were prepared from direct coal liquefaction residue （CLR） by KOH activation method, and the experiments were carried out to investigate the effects of KOH/CLR ratio, solvent for mixing the CLR and KOH, and carbonization procedure on the resultant carbon texture and catalytic activity for catalytic methane decomposition （CMD）. The results showed that optimal KOH/CLR ratio of 2 ： 1; solvent with higher solubility to KOH or the CLR, and an appropriate carbonization procedure are conductive to improving the carbon pore structure and catalytic activity for CMD. The resultant mesoporous carbons show higher and more stable activity than microporous carbons. Additionally, the relationship between the carbon textural properties and the catalytic activity for CMD was also discussed.

关键词： mesoporous activated carbon KOH methane decomposition coal liquefaction residue hydrogen

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DCLR Modifi ed Petroleum Asphalt Optimization and Mixture Road Performance

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Frontiers Research of Architecture and Engineering 2022年第1期5卷 10-18页

作者： Yifan Chu Tao Li Jiaying Ding Zhenmin Liu Yongbing Xue College of Chemistry and Biological Engineering Taiyuan University of Science and TechnologyTaiyuanShanxi030000China

In recent decades,modified asphalt materials have been used in enhancing the traffic load on the *** main objective of this paper is to explore the modifi cation effect of direct coal liquefaction residue(DCLR)on as-phalt binders and investigate the effectiveness of DCLR in improving the performance of asphalt *** paper prepared modifi ed petroleum as-phalt under diff erent process conditions and tested its penetration,softening point and ductility *** on the experimental data,according to gray correlation degree,the performance for the asphalt was *** performance for the modified asphalt is simulated and predicted using poly-nomial *** modifi ed asphalt was analyzed by FT-IR,TGA,SEM and *** results show that the optimal process conditions for DCLR modifi ed asphalt are shear mixing time of 45 min,shear mixing tempera-ture of 150℃ and shear mixing rate of 4000 r/*** predicted fit with the experimental data of 0.993 further demonstrates the effectiveness of the *** characterization results show no significant chemical change between the DCLR and the *** can significantly improve the high temperature performance and water stability of the asphalt,but it has little impact on its low temperature performance.

关键词： Orthogonal design DCLR modified asphalt Asphalt mixture coal liquefaction residue Microscopic composition

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