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| 1 | Influence of the post-treatment of HZSM-5 zeolite on catalytic performance for alkylation of benzene with methanol显示文摘The porous material HZSM-5 zeolite with micro-mesopore hierarchical porosity was prepared by post-treatment(combined alkali treatment and acid leaching) of parent zeolite and its catalytic performance for benzene alkylation with methanol was investigated. The effect of post-treatment on the textural properties was characterized by various techniques(including ICP-AES, XRD, nitrogen sorption isotherms, SEM, NH3-TPD, Py-IR and TG). The results indicated that the post-treatment could modify the structural and acidic properties of HZSM-5 zeolite. In this procedure, not only additional mesopores were created by selective extraction of silicon but also the acidity was tuned. Consequently, the modified HZSM-5 zeolite showed larger external surface area with less acid sites as compared to the parent zeolite. It was found out that the modified zeolite exhibited a higher benzene conversion and xylene selectivity for alkylation of benzene with methanol as well as excellent life span of the catalyst than conventional ones. This can be explained by the facts that the presence of additional mesopores improved the diffusion property in the reactions. Furthermore, the modified zeolite showed an appropriate Br?nsted acidity for effective suppression of the side reaction of methanol to olefins, thus reduced the accumulation of coke on the HZSM-5 zeolite, which was favorable for the catalyst stability. In comparison with the parent HZSM-5 zeolite,the modified zeolite by alkali treatment and acid leaching showed better performance for the benzene alkylation with methanol. | Qingtao Wang Wenwen Han Hualei Hu Jinghui Lyu Xiaolong Xu Qunfeng Zhang Hongjing Wang Xiaonian Li | 2017 | Chinese Journal of Chemical Engineering2017，25，12： | 13 |
| 2 | Benzene alkylation with methanol over phosphate modified hierarchical porous ZSM-5 with tailored acidity显示文摘The acidity and acid distribution of hierarchical porous ZSM-5 were tailored via phosphate modification. The catalytic results showed that both benzene conversion and selectivity of toluene and xylene increased with the presence of appropriate amount of phosphorus. Meanwhile, side reactions such as methanol to olefins related with the formation of by-product ethylbenzene formation and isomerization of xylene to meta-xylene were suppressed efficiently. The acid strength and sites amount of Br?nsted acid of the catalyst were crucial for improving benzene conversion and yield of xylene, whereas passivation of external surface acid sites played an important role in breaking thermodynamic equilibrium distribution of xylene isomers. | Jinghui Lyu Hualei Hu Carolyn Tait Jiayao Rui Caiyi Lou Qingtao Wang Wenwen Han Qunfeng Zhang Zhiyan Pan Xiaonian Li | 2017 | Chinese Journal of Chemical Engineering2017，25，9： | 11 |
| 3 | Synthesized high-silica hierarchical porous ZSM-5 and optimization of its reaction conditions in benzene alkylation with methanol显示文摘In our present work, the high-silica hierarchical porous ZSM-5 with appropriate Br(o|¨)nsted acidity and hierarchical porous structure was synthesized by sol-gel method for continuously catalytic conversion of benzene alkylation with methanol to xylene. The effects of temperature, pressure, benzene/methanol molar ratio and weight hour space velocity(WHSV) on the catalytic performance of the catalyst were investigated as well. As a result, the high-silica hierarchical porous ZSM-5 showed great performance as the yield of xylene was up to 41.1% under the optimum reaction conditions(500 ℃,0.1 MPa,M_(benzene)/M_(methanol)= 1:1.5 and WHSV=4 h 1), while the selectivity to by-product, ethylbenzene, was well suppressed(below 0.1%). In addition, the catalyst structure and properties were characterized by the means of XRD, IR, TPD,SEM, TEM and N_2 physical adsorption technologies. | Jiayao Rui Jinghui Lyu Hualei Hu Qunfeng Zhang Qingtao Wang Xiaonian Li | 2019 | Chinese Chemical Letters2019，30，3： | 5 |
| 4 | Progress in researching into the transition of the Mesozoic tectonic systems in southeast China显示文摘这篇论文论述在东南中国用进 NE- NNE 西方的和平的领域构造的 E-W paleo-Tethyan 在中生代构造系统转变的研究上做的最近的进步。西方太平洋领域的 Tectonism 在中间的侏罗记开始了(J 2) 并且形成了一套趋势 NE 结构, non-coaxially 早并且同时代地在可以是的电子 trending 构造的带上套印由 paleo- Tethyan 领域生产了。因此从电子 trending paleo- Tethyan 开始了构造领域转变到在早白垩纪和平、充分完成的趋势 NE。东方 Nanling 区域是在中间的侏罗记的转变的一个连接地区(J 2), 并且此后,连接地区可能倾斜地移居到沿海的区域,在此是这个学习区域的东方部分。到 Nanling 区域的北方, Ganjiang 差错地区是在二个构造领域之间的边界。相应于构造系统的转变,中国从一个有压缩性的系统改变了到前的 SE 的地球动力学紧张的系统,继续直到中生代的结束,第三级。 | YU Xinqi WU Ganguo ZHANG Da ZHANG Xiangxin DI yongjun ZANG Wenshuan WANG Qunfeng HUANG Huojian | 2006 | Progress in Natural Science:Materials International2006，16，6： | 3 |
| 5 | Synthesis of rapid responsive gels comprising hydrophilic backbone and poly( N -isopropylacrylamide) graft chains by RAFT polymerization and end-linking processes显示文摘 | Qunfeng Liu Ping Zhang Aixiang Qing Yanxun Lan Jianbo Shi Mangeng Lu | 2006 | Polymer2006，，20： | 2 |
| 6 | A resource recycling technique of hydrogen production from the catalytic degradation of organics in wastewater显示文摘A resource recycling technique of hydrogen production from the catalytic degradation of organics in wastewater by aqueous phase reforming (APR) has been proposed. It is worthy of noting that this technique may be a potential way for the purification of refractory and highly toxic organics in water for hydrogen production. Hazardous organics (such as phenol, aniline, nitrobenzene, tetrahydrofuran (THF), toluene, N,N-dimethylformamide (DMF) and cyclohexanol) in water could be completely de-graded into H2 and CO2 with high selectivity over Raney Ni, and Sn-modified Raney Ni (Sn-Raney-Ni) or Pd/C catalyst under mild conditions. The experimental results operated in tubular and autoclave reactors, indicated that the degradation degree of organics and H2 selectivity could reach 100% under the optimal reaction conditions. The Sn-Raney-Ni (Sn/Ni=0.06) and Pd/C catalysts show better catalytic performances than the Raney Ni catalyst for the degradation of organics in water into H2 and CO2 by the aqueous phase reforming process. | LI XiaoNian KONG LingNiao XIANG YiZhi JU YaoMing WU XiaoQiong FENG Feng YUAN JunFeng MA Lei LU ChunShan ZHANG QunFeng | 2008 | Science China Chemistry2008，51，11： | 2 |
| 7 | Gas-phase dehydrochlorination of 1, 1, 2, 2-tetrachloroethane over the non-metal supported ionic liquid catalyst显示文摘Developing of non-metallic catalyst to replace metal catalyst is a meaningful and challenging direction.In this work,the non-metallic catalyst was synthetized successfully by loading ionic liquid onto the silica surface,which was applied for the gas-phase dehydrochlorination of 1,1,2,2-tetrachloroethane.The 12%TPPC/SiO2(wt%)showed the best results with the conversion of 1,1,2,2-tetrachloroethane reaching 100%.The selectivity of 1,1,2-trichloroethylene was 100%,and no deactivation was found during the evaluation period.The catalytic mechanism was investigated and possible reaction route was given,which was a reference for fabricating and design of solid base catalyst. | Pengze Zhang Yangzhen Jin Zhaobin Jiang Guanqun Xie Qunfeng Zhang Xiaonian Li | 2020 | Chinese Journal of Chemical Engineering2020，28，6： | 2 |
| 8 | Probing deactivation by coking in catalyst pellets for dry reforming of methane using a pore network model显示文摘Dry reforming of methane(DRM) is an attractive technology for utilizing the greenhouse gases(CO_(2) and CH_(4)) to produce syngas. However, the catalyst pellets for DRM are heavily plagued by deactivation by coking, which prevents this technology from commercialization. In this work, a pore network model is developed to probe the catalyst deactivation by coking in a Ni/Al_(2)O_(3) catalyst pellet for DRM. The reaction conditions can significantly change the coking rate and then affect the catalyst deactivation. The catalyst lifetime is higher under lower temperature, pressure, and CH_(4)/CO_(2) molar ratio, but the maximum coke content in a catalyst pellet is independent of these reaction conditions. The catalyst pellet with larger pore diameter, narrower pore size distribution and higher pore connectivity is more robust against catalyst deactivation by coking, as the pores in this pellet are more difficult to be plugged or inaccessible.The maximum coke content is also higher for narrower pore size distribution and higher pore connectivity, as the number of inaccessible pores is lower. Besides, the catalyst pellet radius only slightly affects the coke content, although the diffusion limitation increases with the pellet radius. These results should serve to guide the rational design of robust DRM catalyst pellets against deactivation by coking. | Yu Wang Qunfeng Zhang Xinlei Liu Junqi Weng Guanghua Ye Xinggui Zhou | 2023 | Chinese Journal of Chemical Engineering2023，55，3： | 2 |
| 9 | Bioinspired robust nanocomposites of cooper ions and hydroxypropyl cellulose synergistic toughening graphene oxide显示文摘The hierarchical micro/nanoscale layered an formation of organic and inorganic components of natural through bonding nacre,results in abundant interfacial interfacial interactions,providing inspiration for fabricating bioinspired nanocomposites constructing from the interactions.Herein,we demonstrated from the ions synergistic upon interfacial interactions of based hydrogen hydroxypropyl cellulose and ionic bonding copper the reduced graphene oxide bioinspired well nanocomposites,electrical which show These the t integrated electronics tensile strength,toughness and excellent fatigue-resistant property,as as high conductivity.ex r a or d i n ar y properties devices,allow etc.this kind of bioinspired opens nanocomposites for to potentially utilize in the fields of aerospace,flexible This via study also a door fabricating excellent future.mechanical performance graphene-based bioinspired nanocomposites synergistic interfacial interactions in | ZHANG Qi WAN SiJie JIANG Lei CHENG QunFeng | 2017 | Science China(Technological Sciences)2017，60，5： | 2 |
| 10 | Optical wavelet de-noising applied in multi-span nonlinear fiber links 显示文摘 | SHAO Qunfeng ZHANG Xiaoping Q1A Xiaoqiong | 2010 | Optics Communications2010，283，7： | 1 |
| 11 | Cytological diploidization and rapid genome changes of the newly synthesized allotetraploids Cucumis × hytivus显示文摘 | Longzheng Chen Qunfeng Lou Yong Zhuang Jinfeng Chen Xiaoqing Zhang Joseph N. Wolukau | 2007 | Planta2007，，3： | 1 |
| 12 | Thermal conductivity of MWCNT/epoxy composites: The effects of length, alignment and functionalization显示文摘 | Jin Gyu Park Qunfeng Cheng Jun Lu Jianwen Bao Shu Li Ying Tian Zhiyong Liang Chuck Zhang Ben Wang | 2012 | Carbon2012，，6： | 1 |
| 13 | Mapping of fruit apex shape related QTLs across multi-genetic backgrounds in cucumber(Cucumis sativus L.)显示文摘The shape of fruit apex is critical to appearance quality in cucumber(Cucumis sativus L.),of which the genetic basis was poorly understood,and the use of marker-assisted breeding for fruit apex improvement is not available yet.In this study,the variation of fruit apex in different cucumber ecotypes was evaluated by fruit apex angle(variation coefficient from 7.1%to 15.7%)and fruit apex index(variation coefficient from 8.8%to 22.6%).Fruit apex associated QTLs were mapped by using 145 F_(2:3) families and 155 F_(2:6) population that were derived from the cross of different ecotype cucumbers.Phenotyping of the mapping populations were conducted in four experiments in 2 years.Four majoreffect QTLs,Bfal4.1,Bfai4.1,Bfad6.1 and Bfai6.1 were consistently and reliably detected across two environments which could explain 11.6%-33.6%phenotypic variations(R^(2))in the F_(2:3) families.Three major-effect QTLs,Ofai4.1(R^(2)=13.4%-15.5%),Ofal4.1(R^(2)=10.7%-12.8%),and Ofad6.1(R^(2)=11.6%-12.4%)were stably detected in the F_(2:6) population in two experiments.Bfai4.1,Bfal4.1,Ofai4.1 and Ofal4.1 were integrated to be consensus QTL fa4.1,within which 11 candidate genes were predicted.Bfai6.1 and Bfad6.1 were integrated to be consensus QTL fa6.1.QTL interaction analysis showed that Bfai6.1 has epistatic effect with Bfai4.1.This study revealed two reliable major-effect fruit apex related QTLs across multi-genetic backgrounds and environments in cucumber.The possible candidate genes regulating the shape of fruit apex,and the relationship between cell division and fruit apex morphogenesis were discussed. | Pinyu Zhu Yongjiao Meng Kaijing Zhang Xueyan Wang Kun Liang Tuantuan Wang Jian Xu Xiaodong Qin Zhe Wu Chunyan Cheng Xiaqing Yu Chuntao Qian Qunfeng Lou Jinfeng Chen Ji Li | 2022 | Horticultural Plant Journal2022，8，3： | 1 |
| 14 | Agglomerated CNTs synthesized in a fluidized bed reactor: agglomerate structure and formation mechanism 显示文摘 | Yu Hao Zhang Qunfeng Wei Fei Qian Weizhong Luo Guohua | 2003 | Carbon2003，41，14： | 1 |
| 15 | Poly (N-isopropylacrylamide) hydrogels with improved shrinking kinetics by RAFT polymerization显示文摘 | Qunfeng Liu Ping Zhang Aixiang Qin | 2006 | Polymer2006，47，： | 1 |
| 16 | Highly selective hydrogenation of 3,4-dichloronitrobenzene over Pd/C catalysts without inhibitors显示文摘 | Lei Ma Sha Chen Chunshan Lu Qunfeng Zhang Xiaonian Li | 2011 | Catalysis Today2011，，1： | 1 |
| 17 | Highly selective oxidation of amines to imines by Mn2O3 catalyst under eco-friendly conditions显示文摘Enhancing the selectivity of imines for the oxidative self-coupling of primary amines was found to be challenging in the heterogeneous catalysis.Three different manganese oxides(M-3,M-4,M-5) were synthesized by controlling the calcination temperature using a simple template-free oxalate route.The prepared manganese oxides were systematically characterized using XRD,N2 sorption,SEM,TEM,XPS,H2-TPR techniques.M-4 gave 96.2% selectivity of imine at 100% conversion of benzylamine,which was far more superior than other existing protocols.Mn^3+/Mn^4+ ratio was found to affect the selectivity of the imines.The probable reaction pathway for amines oxidation catalyzed by manganese oxides was proposed for the first time. | Fushan Chen Tao Yang Songlin Zhao Taotao Jiang Lu Yu Houfeng Xiong Chuankun Guo Yufang Rao Yan Liu Liu Liu Jian Zhou Pengxiang Tu Jun Ni Qunfeng Zhang Xiaonian Li | 2019 | Chinese Chemical Letters2019，30，12： | 1 |
| 18 | High suppressionof the formation of ethylbenzene in benzene alkylationwith methanol over ZSM-5 catalyst modified byplatinum显示文摘 | Hu Hualei Zhang Qunfeng Cen Jie | 2014 | Catalysis Communications2014，57，： | 1 |
| 19 | High suppression of the formation of ethylbenzene in benzene alkylation with methanol over ZSM-5 catalyst modified by platinum显示文摘 | Hu Hualei Zhang Qunfeng Cen Jie | 2014 | Catal Commun2014，57，： | 1 |
| 20 | Adsorption of CO2 and H2 on Nitrogen-doped Porous Carbon from Ionic Liquid Precursor显示文摘 | ZHANG Lingna CAI Kun ZHANG Feng YUE Qunfeng | 2015 | Chemical Research in Chinese Universities2015，31，1： | 1 |
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