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| 1 | Vapor-hydrate phases equilibrium of (CH_4+C_2H_6) and (CH_4+C_2H_4) systems显示文摘Separation of the(C1+C2)hydrocarbon system is of importance in natural gas processing and ethylene production.However it is the bottleneck because of its high refrigeration energy consumption, and needs to be urgently addressed.The technology of separating gas mixtures by forming hydrate could be used to separate(C 1 +C 2 )gas mixtures at around 0°C and has attracted increasing attention worldwide.In this paper,investigation of vapor-hydrate two-phase equilibrium was carried out for(C 1 +C 2 )systems with and without tetrahydrofuran(THF).The compositions of vapor and hydrate phases under phase equilibrium were studied with model algorithm when structure I and structure II hydrates coexisted for the(methane+ethane)system.The average deviation between the modeled and actual mole fractions of ethane in hydrate and vapor phases was 0.55%,and that of ethylene was 5.7%when THF was not added.The average deviation of the mole fraction of ethane in vapor phase was 11.46%and ethylene was 7.38%when THF was added.The test results showed that the proposed algorithm is practicable. | Ma Qinglan Chen Guangjin Zhang Lingwei | 2008 | Petroleum Science2008，5，4： | 4 |
| 2 | Experimental study of separation of ammonia synthesis vent gas by hydrate formation显示文摘Termodynamic data on methane hydrate formation in the presence of ammonia are very important for upgrading of ammonia synthesis vent gas using hydrate formation. This paper is focused on the formation conditions of methane hydrate in the presence of ammonia and the effects of gas-liquid ratio and temperature on the separation of vent gas by hydrate formation. Equilibrium data for methane hydrate within an ammonia mole concentration range from 1% to 5 % were obtained. The experimental results indicated that ammonia has an inhibitive effect on hydrate formation. The higher the ammonia concentration, the higher is the pressure reguired for methane hydrate formation would be. The primary experimental results showed that when volume ratio of gas to liquid was 80:1 and temperature was 283.15 K, total mole fraction of (H2+N2) in gas phase could reach 96.9 %. | Dong Taibin Wang Leiyan Liu Aixian Guo Xuqiang Ma Qinglan Li Guowen Sun Qiang | 2009 | Petroleum Science2009，6，2： | 3 |
| 3 | Prediction of vapor-liquid-liquid-hydrate phase equilibrium for multicomponent systems containing tetrahydrofuran显示文摘Numbers of hydrate-based new techniques require the algorithm to be able to perform multiphase flash calculation where one phase is a gas hydrate phase.Tetrahydrofuran(THF)is frequently used as a thermodynamic promoter in the development of hydrate-based technique,which can reduce the hydrate formation pressure,especially when methane or hydrogen exists.However,it is a hard work to describe accurately the phase behavior of THF-water system due to their polarities.It has been proved that the water-in-oil(W/O)emulsion can raise the hydrate formation rate and improve the single stage separation efficiency,and furthermore prevent the hydrate from agglomeration to plug the facilities.The goal of this work is to present an extension of our previous work to the prediction of the vapor-liquid-liquid-hydrate equilibrium of such complex systems.These include ternary and quaternary mixtures with W/O emulsion containing THF.The proposed algorithm of four phase equilibrium calculation is very simple due to avoiding the complexity of simultaneous solution of the sophisticated equation group.The calculation results were found to be in satisfactory agreement with the experimental data. | MA QingLan CHEN GuangJin | 2013 | Science China Chemistry2013，56，12： | 1 |
| 4 | 2020 Roadmap on gas-involved photo-and electro-catalysis显示文摘Green reactions not only provide us chemical products without any pollution,but also offer us the viable technology to realize difficult tasks in normal conditions.Photo-,photoelectro-,and electrocatalytic reactions are indeed powerful tools to help us to embrace bright future.Especially,some gas-involved reactions are extremely useful to change our life environments from energy systems to liquid fuels and cost-effective products,such as H2 evolution(H2 production),02 evolution/reduction,CO2 reduction,N2 reduction(or N2 fixation) reactions.We can provide fuel cells clean H2 for electric vehicles from H2 evolution reaction(HER),at the same time,we also need highly efficient 02 reduction reaction(ORR) in fuel cells for improving the reaction kinetics.Moreover,we can get the clean oxidant O2 from water through O2 evolution reaction(OER),and carry out some reactions without posing any pollution to reaction systems.Furthermore,we can translate the greenhouse gas CO2 into useful liquid fuels through CO2 reduction reaction(CRR).Last but not the least,we can get ammonia from N2 reduction reaction(NRR),which can decrease energy input compared to the traditional Hubble process.These reactions,such as HER,ORR,OER,CRR and NRR could be realized through solar-,photoelectro-and electro-assisted ways.For them,the catalysts used play crucial roles in determining the efficiency and kinds of products,so we should consider the efficiency of catalysts.However,the cost,synthetic methods of catalysts should also be considered.Nowadays,significant progress has been achieved,however,many challenges still exist,reaction systems,catalysts underlying mechanisms,and so on.As extremely active fields,we should pay attention to them.Under the background,it has motivated us to contribute with a roadmap on ’GasInvolved Photo-and Electro-Catalysis’. | Yulu Yang Yang Tang Haomin Jiang Yongmei Chen Pingyu Wan Maohong Fan Rongrong Zhang Sana Ullah Lun Pan Ji-Jun Zou Mengmeng Lao Wenping Sun Chao Yang Gengfeng Zheng Qiling Peng Ting Wang Yonglan Luo Xuping Sun Alexander S.Konev Oleg V.Levin Panagiotis Lianos Zhuofeng Hu Zhurui Shen Qinglan Zhao Ying Wang Nadia Todorova Christos Trapalis Matthew V.Sheridan Haipeng Wang Ling Zhang Songmei Sun Wenzhong Wang Jianmin Ma | 2019 | Chinese Chemical Letters2019，30，12： | 1 |
| 5 | Web Resources for Microbial Data显示文摘There are multitudes of web resources that are quite useful for the microbial scientific research community. Here, we provide a brief introduction on some of the most notable microbial web resources and an evaluation of them based upon our own user experience. | Qinglan Sun Li Liu Linhuan Wu Wei Li Quanhe Liu Jianyuan Zhang Di Liu Juncai Ma | 2015 | Genomics, Proteomics & Bioinformatics2015，13，1： | 1 |
| 6 | A Class of Cyclic Queue with Priority Batch Service 显示文摘 | Ma Zili Wang Siming Li Qinglan | 1991 | Applied Mathematical Modelling (S0307- 904X)1991，15，9： | 1 |
| 7 | Methane recovery from natural gas hydrate in porous sediment using pressurized liquid CO2 显示文摘 | Yuan Qing Sun Changyu Liu Bei Wang Xue Ma Zhengwei Ma Qinglan | 2013 | Energy Conversion and Management2013，67，： | 1 |
| 8 | Prediction of Structure-H Gas Hydrate Formation Conditions for Reservoir Fluids显示文摘In this work, a thermodynamic model is developed for prediction of structure H hydrate formation. The model combines the Peng-Robinson equation of state for the vapor, liquid and aqueous phases with the extended Ng-Robinson hydrate model for gas hydrate formation of all three structures. The parameters of 14 structure- H hydrate formers are determined based on the experimental data of structure-H hydrates in the literature. The expression of fugacity of water in the empty hydrate phase is correlated for calculating structure-H hydrate formation conditions in the absence of free water. The model is tested by predicting hydrate formation conditions of a number of structure-H hydrate forming systems which are in good agreement with the experimental data. The proposed model is also applied to the prediction of hydrate formation conditions for various reservoir fluids such as natural gas and gas condensate. | MA Qinglan(马庆兰) CHEN Guangjin(陈光进) GUO Tianmin(郭天民) ZHANG Kun(张坤) Julian Y. Zuo Dan Zhang Heng-Joo Ng | 2005 | Chinese Journal of Chemical Engineering2005，13，4： | 1 |
| 9 | A class of cyclic queue with priority batch service显示文摘 | Ma Zili Wang Siming Li Qinglan | 1991 | Appl Math Modelling1991，15，9： | 1 |
| 10 | The specific surface area of methane hydrate formed in different conditions and manners显示文摘The specific surface area of methane hydrates, formed both in the presence and absence of sodium dodecyl sulfate (SDS) and processed in different manners (stirring, compacting, holding the hydrates at the formation conditions for different periods of time, cooling the hydrates for different periods of time before depressurizing them), was measured under atmospheric pressure and temperatures below ice point. It was found that the specific surface area of hydrate increased with the decreasing temperature. The methane hydrate in the presence of SDS was shown to be of bigger specific surface areas than pure methane hydrates. The experimental results further demonstrated that the manners of forming and processing hydrates affected the specific surface area of hydrate samples. Stirring or compacting made the hydrate become finer and led to a bigger specific surface area. | WANG XiuLin SUN ChangYu CHEN GuangJin YANG LanYing MA QingLan CHEN Jun TANG XuLong LIU Peng | 2009 | Science China Chemistry2009，52，3： | 0 |
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