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Reaction of Positronium with Proton in Ultra-stable Y Zeolite Studied by Positrons

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Chinese Physics Letters 2000年第2期17卷 134-136页

作者： ZHU Jun MA Li WANG Shao-Jie LUO Xi-Hui Department of Physics Wuhan UniversityWuhan 430072 Fushun research Institute of Petroleum and petrochemicals Fushun 113001

The positron annihilation lifetime spectra were measured as a function of the heating temperature for the ultrastable Y (USY) zeolites. The lifetime spectra were well resolved into five lifetime components, and the longer lifetimes τ3, τ4 and τ5 are assigned to ortho-positronium annihilating in the β-cage, super-cage and the second pore in USY zeolite, respectively. The interesting observation is that the annihilation rate λ5 (the reciprocal ofthe τ5) of the fifth component increases and its intensity I5 decreases with the increasing heating temperature. The result is interpreted in terms of the increase in proton and the reaction between the positronium and proton in USY zeolite after heated.

关键词： temperature lifetime zeolite

Simultaneous recovery of carbon and sulfur resources from reduction of CO_2 with H_2S using catalysts

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Journal of Energy Chemistry 2016年第1期25卷 110-116页

作者： Hui Su Yuyang Li Ping Li Yongxiu Chen Zhizhi Zhang Xiangchen Fang State Key Laboratory of Chemical Engineering East China University of Science and Technology Fushun research Institute of Petroleum & petrochemicals Sinopec

An approach to the simultaneous reclamation of carbon and sulfur resources from CO2 and H2S has been proposed and effectively implemented with the aid of catalysts. A brief thermodynamic study reveals the potential of direct reduction of CO2 with H2S（15：15 mol% balanced with N2） for selective production of CO and elemental sulfur. The experiments carried out in a fixed-bed flow reactor over the temperature range of 400–800 °C give evidence of the importance of the employment of catalysts. Both the conversions of the reactants and the selectivities of the target products can be substantially promoted over most catalysts studied. Nevertheless, little difference appears among their catalytic performance. The results also prove that the presence of CO2 can remarkably enhance H2S conversion and the sulfur yield in comparison with H2S direct decomposition. A longtime reaction test on Mg O catalyst manifests its superior durability at high temperature（700 °C） and huge gas hourly space velocity（100,000 h-1）. Free radicals initiated by catalysts are supposed to dominate the reactions between CO2 and H2S.

关键词： Carbon dioxide Hydrogen sulfide Simultaneous recovery Reduction Catalyst

Charge effects on quinoline hydrodenitrogenation catalyzed by Ni-Mo-S active sites-A theoretical study by DFT calculation

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Petroleum Science 2022年第1期19卷 339-344页

作者： Si-Jia Ding Shao-Zhong Peng Zuo-Jie Yan Ji-Feng Wang Shu-Jiao Jiang Zhan-Lin Yang Dalian research Institute of Petroleum and petrochemicals SINOPECDalian116041China Fushun Petrochemical Company FushunLiaoning113001China

The charge distribution on Ni-Mo-S active sites can affect hydrodenitrogenation(HDN)*** this study,a series of model Ni-Mo-S were developed with various charge *** comparison,the charge distribution effects on quinoline HDN were *** results show that a lack of electrons and extra protons can both lower the orbital eigenvalue of the Ni-Mo-S,leading to stronger adsorption of nitrogen-containing compounds and inhibition of ammonia *** deficiency will improve the generation of active hydrogen on the active sites but inhibit hydrogen transfer to the nitrogen compounds;extra protons can provide H^(+)to the nitrogen compounds,which will flexibly transfer between the nitrogen compound and active sites,thus improving the cleavage of the C-N bond.

关键词： Charge distribution Ni-Mo-S active Sites Quinoline Hydrodenitrogenation Quantum chemistry calculation

Synthesis,characterization and catalytic properties of Y-β zeolite composites

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Petroleum Science 2011年第2期8卷 224-228页

作者： Qin Bo Zhang Xiwen Zhang Zhizhi Ling Fengxiang Sun Wanfu Fushun research Institute of Petroleum and petrochemicals S1NOPEC Fushun Liaoning 113001 China

Y-β zeolite composites were hydrotherrnally synthesized by using high silica Y zeolite as the precursor and characterized by XRD, N2 adsorption, SEM and IR spectra of pyridine. The result showed that the N2 adsorption-desorption isotherm of the zeolite composites had a distinct hysteresis loop, and the SEM result showed that the zeolite composites had a different morphology from Y, β and the corresponding physical zeolite mixture. The acid catalytic performance of the zeolite composite catalysts was investigated in the hydrocracking and hydroisomerization of n-octane, and the results showed that the composite materials exhibited an excellent hydrocracking activity and good hydroisomerization performance. The yield of i-C4 over the zeolite composite catalyst was 4.45% higher than that on the corresponding zeolite mixture in the n-octane hydrocracking process at 553 K. The isomerization ability of n-octane over the composite catalyst was 3.6 fold that of the corresponding mixture at 503 K.

关键词： Zeolite composites synthesis characterization hydrocracking hydroisomerization

Study on the Extra-framework Aluminium in REUSY Zeolites

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Chinese Science Bulletin 1993年第17期38卷 1446-1450页

作者：鲍书林傅军须沁华童广明张奎喜 Department of Chemistry Nanjing University Fushun research Institute of Petroleum and petrochemicals

1 Introduction Recently, catalytic cracking catalysts have been developed from using USY zeolites as octane enhancement catalysts (mainly to improve the research-method octane number) to employing REUSY zeolites as high octane number-high gasoline yield catalysts (octanebarreled catalyst). The peculiarities of REUSY zeolites are the increase of the researchmethod octane number, the motor-method octane number and the gasoline yield. At pres-

关键词： REUSY zeolites extra-framework aluminium cracking catalysts.

Development of FHDS Type Catalyst for Deep Hydrodesulfurization of Diesel Fuel

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China Petroleum Processing & Petrochemical Technology 2005年第4期7卷 36-40页

作者： Guo Rong Yao Yunhai Zhou Yong Fushun research Institute of Petroleum and petrochemicals Fushun 113001

The FHDS type catalyst for deep hydrodesulfurization (HDS) of diesel fuel is a highactivity catalyst developed by FRIPP in order to meet the requirements of Chinese refiners for production of low-sulfur clean diesel fuel containing less than 300 ppm of sulfur. The FH-DS type catalyst has excellent HDS and HDN activity thanks to modification of alumina through incorporating additives, optimization of catalyst preparation and optimal combination of active *** low pressure the HDS activity of this catalyst is by 50% higher than that of domestic reference catalysts available in the market and is slightly better than that of foreign reference catalyst. When this catalyst is used for manufacture of clean ultra-low sulfur diesel (containing ＜30 ppm of S), its volumetric relative desulfurization activity is 46% higher than that of foreign reference catalyst, and this catalyst is an excellent catalyst for manufacture of low-sulfur clean diesel fuel derived from imported high-sulfur Kuwaiti and Arabian crude oils.

关键词：加氢脱硫催化剂柴油清洁燃料粗油低硫处理

Reaction Process of Heavy Hydrocarbons Hydrogenation in Ebullated Bed

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China Petroleum Processing & Petrochemical Technology 2021年第4期23卷 113-120页

作者： Wang Jianjun Tong Yujun Yang Tao Ge Hailong Meng Zhaohui Lanzhou University of Technology Lanzhou 730050 SINOPEC Dalian research Institute of Petroleum and petrochemicals Dalian 116100

The properties and structural changes of unconverted oil(UCO)obtained from ebullated bed hydrogenation at different residue conversion rates were analyzed to clarify the reaction process of heavy ***,the processing routes of UCO,delayed coking,and solvent deasphalting,were *** results showed that with the increase of conversion,the impurity removal rate increased;meanwhile the contents of sulfur and metal in UCO decreased,while the contents of nitrogen and residual carbon increased,and the colloidal stability of UCO became *** structural parameters of UCO indicated that the change in molecular structure of heavy oil mainly covered the opening of cycloalkanes ring,hydrogenation saturation of aromatic rings and dealkylation reaction during hydrogenation in the ebullated bed;the aromatic structure was basically unchanged at high conversion,and was mainly due to the ring opening of cycloalkanes and the fracture reaction of alkyl side *** coking route of UCO showed that low sulfur petroleum coke with different grades could be prepared by adjusting the conversion in ebullated bed to produce UCOs with different *** coke generating coefficient and sulfur transfer coefficient in UCO coking process were higher than those in residue *** properties of deasphalted oil(DAO)of UCO were significantly improved and could be used as FCC or hydrocracking *** DAO yield of UCO feedstock at high conversion was higher,and its sulfur content was lower and CCR value was higher.

关键词： ebullated bed residue hydrogenation residue conversion rate structural parameters low sulfur petroleum coke solvent deasphalting

Preparation and Characterization of Al_2O_3-TiO_2 Complex Supports by Nano-scale Self-assembly Technique

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China Petroleum Processing & Petrochemical Technology 2010年第1期12卷 13-16页

作者： Li Kuanbiao Li Ping Wang Dingcong Zhao Shanlin Liaoning University of Petroleum and Petrochemical Technology Fushun 113001 Fushun research Institute of Petroleum and petrochemicals

The two-step nano-scale self-assembly technique and the framework structure mechanism for forming mesoporous supports were employed for preparing Al2O3-TiO2 complex supports with large pore volume that were applied for manufacturing the resid hydrotreating catalysts. The influence of different TiO2 contents and calcination temperatures on specific surface area, pore volume and pore size distribution of complex supports was studied. TEM and SEM were employed to characterize the Al2O3-TiO2 complex supports. Test results revealed that the specific surface area of Al2O3-TiO2 complex supports was the largest at a TiO2 mass fraction of 20%, and when the calcination temperature was in the range between 300 ℃ to 700 ℃, the pore distribution of the complex support was stable. Characterization of the complex support by TEM and SEM demonstrated that TiO2 was homo- geneously distributed in the complex support, which was in favor of carrying active components. The Al2O3-TiO2 complex supports can function as the best catalyst support for resid hydrotreating catalysts.

关键词： nano self-assembly alumina titanium dioxide complex support pore structure

N-methyl-2-pyrrolidonium-based Br?nsted-Lewis acidic ionic liquids as catalysts for the hydrolysis of cellulose

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Science China Chemistry 2016年第5期59卷 564-570页

作者： Zheng Zhao Na Li Abdul Waheed Bhutto Ahmed A. Abdeltawab Salem S. Al-Deyab Guangqing Liu Xiaochun Chen Guangren Yu Beijing Key Laboratory of Membrane Science and Technology College of Chemical EngineeringBeijing University of Chemical TechnologyBeijing 100029China Department of Chemical Engineering Mehran University of Engineering and TechnologyJamshoro 76062Pakistan petrochemicals research chair College of ScienceKing Saud UniversityRiyadh 11451Saudi Arabia

We experimentally studied the catalytic performances of a series of Brrnsted-Lewis acidic N-methyl-2-pyrrolidonium metal chlorides （[Hnmp]Cl/MClx, where M=Fe, Zn, A1, or Cu） for the hydrolysis of microcrystalline cellulose （MCC） and cotton to produce reducing sugar. A variety of factors, such as temperature, time, ionic liquid （IL） species, IL dosage, and the concentra- tion of the metal chloride were investigated. [Hnmp]Cl/FeCl3 presented the best hydrolysis performance, affording a 98.8% yield of total reducing sugar from MCC （1 h, 100 ℃, 0.1 g MCC, 0.2 g acidic IL, 2.0 g [Bmim]Cl as solvent）, which is better than or comparable to results previously obtained with other -SO3H functionalized acidic ILs. The hydrolysis performances of [Hnmp]Cl/MClx were rationalized using density functional theory calculations, which indicated that interactions between the metal chlorides and the cellulose, including charge-transfer interactions are important in the hydrolysis of cellulose and degra- dation of glucose. This work shows that Bronsted-Lewis acidic ILs are potential catalysts for the hydrolysis of cellulose to produce sugar.

关键词： cellulose hydrolysis ionic liquid density functional theory