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Sun J.,Northwest University, China | Liu X.,Northwest University, China | Li D.,Northwest University, China | Cui L.,The Northwest Research Institute of Chemical Industry | And 3 more authors.
Shiyou Xuebao, Shiyou Jiagong/Acta Petrolei Sinica (Petroleum Processing Section) | Year: 2014

A new six-lump kinetic model was proposed according to four-component raw oil and the cut fraction of product oil to describe coal tar hydrocracking. The effects of hydrogen partial pressure, the LHSV(Liquid hour space velocity) and bed temperature on the medium temperature coal tar hydrocracking were investigated. The differential equations were solved with the fourth order variable step Runge-Kutta and optimized with variable metric method(BFGS) in Visual C++. The model was also validated. The relative error of the model was within 3%, showing a good predictability.

Liu R.,Northwest University, China | Hao H.,Northwest University, China | Liang S.,Northwest University, China | Jia S.,The Northwest Research Institute of Chemical Industry
Lizi Jiaohuan Yu Xifu/Ion Exchange and Adsorption | Year: 2012

Microgels are cross-linked colloidal polymer microparticles. The stimulus-responsive microgel particles are able to swell or deswell in response to a range of environment changes. They are biocompatible, and can undergo rapid reversible phase transition. In this paper, the latest researches in this area, including the synthesis of microgels with interpenetrating network, core-shell structured microgels, and hybrid microgel particles containing inorganic nanopaticles, and the applications of microgel particles in controlled drug release, catalytic reaction, biosensor and opitical materials were summarized. The research prospects and issues faced in this field are also discussed.

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