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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 | A leaf shape mutant provides insight into PINOID Serine/Threonine Kinase function in cucumber(Cucumis sativus L.)显示文摘Optimizing leaf shape is a major challenge in efforts to develop an ideal plant type. Cucumber leaf shapes are diverse;however, the molecular regulatory mechanisms underlying leaf shape formation are unknown. In this study, we obtained a round leaf mutant(rl) from an ethyl methanesulfonate-induced mutagenesis population. Genetic analysis revealed that a single recessive gene, rl, is responsible for this mutation. A modified Mut Map analysis combined linkage mapping identified a single nucleotide polymorphism within a candidate gene,Csa1 M537400, as the mutation underlying the trait.Csa1 M537400 encodes a PINOID kinase protein involved in auxin transport. Expression of Csa1 M537400 was significantly lower in the rl mutant than in wild type, and it displayed higher levels of IAA(indole-3-acetic acid) in several tissues. Treatment of wild-type plants with an auxin transport inhibitor induced the formation of round leaves,similar to those in the rl mutant. Altered expression patterns of several auxin-related genes in the rl mutant suggest that rl plays a key role in auxin biosynthesis,transport, and response in cucumber. These findings provide insight into the molecular mechanism underlying the regulation of auxin signaling pathways in cucumber,and will be valuable in the development of an ideal plant type. | Mengfei Song Feng Cheng Jing Wang Qingzhen Wei Wenyuan Fu Xiaqing Yu Ji Li Jinfeng Chen Qunfeng Lou | 2019 | Journal of Integrative Plant Biology2019，61，9： | 3 |
| 5 | 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 |
| 6 | Fiber-Optic Fabry-Perot Hydrogen Sensor Coated With Pd-Y Film显示文摘一个光纤的 Fabry-Perot 氢传感器被在不同的氢集中测量穗对比变化开发。试验性的结果显示有 Pd-Y 电影的察觉到的表演与 Pd 电影比那好。有 0.5 dB 的减少的一个穗对比从 0% ~ 5.5% 与一个氢集中变化被检测。传感器的温度反应也被测量。 | Caibin YU Li LIU Xiaoxiao CHEN Qunfeng LIU Yuan GONG | 2015 | Photonic Sensors2015，5，2： | 3 |
| 7 | Comparative Cyto-molecular Analysis of Repetitive DNA Provides Insights into the Differential Genome Structure and Evolution of Five Cucumis Species显示文摘The genus Cucumis, includes the cucumber(2n = 14), melon(2n = 24), and other wild species, which is a good model for studying genome organization and evolution due to their variation in genome size and basic chromosome number. In this study, five Cucumis species with different geographical origins and basic chromosome numbers(i.e., C. sativus, C. hystrix, C. melo, C. anguria, and C. metuliferus) were used to identify and characterize the repetitive DNA in detail using a phylogenetic method. Comparative cyto-molecular genetic analysis of repetitive DNA was carried out using a graph-based clustering method, construction of Neighbor-Joining tree and fluorescence in situ hybridization(FISH).The results revealed that the five Cucumis species had differences in the repeat content of their genome, as well as in the composition of repetitive DNA and their genomic proportions. Three species from subgenus Melo showed a decreased tendency in both repeat types and genomic proportions, while two species from subgenus Cucumis also showed a decreased tendency in repeat types, but an increased tendency in genomic proportions. Phylogenic analysis of Cucumis Ty1/Copia, Ty3/Gypsy, and 45 S rDNA ITS regions revealed that C. sativus, C. hystrix, and C. melo were closely related species, which C. sativus and C. hystrix were closer, while C. anguria and C. metuliferus were closer to each other and further from the other three species. Differential accumulation and elimination of different repeat types divergently shaped the genomic architecture of these five Cucumis species, contributing to the genome’s evolution and diversification. Overall, these results enhance our understanding of the genomes of these five Cucumis species, and contribute to a more holistic view of genome evolution and phylogenetics of this genus. | Shuqiong Yang Chunyan Cheng Xiaodong Qin Xiaqing Yu Qunfeng Lou Ji Li Chuntao Qian Jinfeng Chen | 2019 | Horticultural Plant Journal2019，5，5： | 2 |
| 8 | 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 |
| 9 | 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 |
| 10 | 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 |
| 11 | 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 |
| 12 | A Super-Large Rb-Nb Rare Metal Deposit has been Discovered in Huashi Village of Xinglong County, Hebei Province显示文摘Objective The Huashi Village in Xinglong County of Hebei Province is located in the Yanshan subsidence zone in the central eastern North China Plate,which is 137 km away from Beijing City(Fig.1a).This area has undergone large-scale magmatic intrusion affected by the tectonic compression of the Pacific Plate in the Mesozoic(known as the Yanshanian movement)to form many alkaline | LI Yujing XIE Wu QI Yunfei MIAO Qunfeng XIONG Chao GONG Chuanwei | 2017 | Acta Geologica Sinica(English Edition)2017，91，6： | 2 |
| 13 | Preform-based toughening technology for RTMable high-temperature aerospace composites显示文摘This article describes the efforts that led to the development of surface-loaded preforms that may be used to significantly improve the compression-after-impact strength of high-temperature composites and correspondingly to dramatically reduce the area of damage because of impact.Moreover,by matching the toughening polymer surface-loaded and design of the surface pattern,in-plane mechanical properties are unaffected or even improved over laminates made from the identical materials.The proprietary preforms,so-called ESTM-Fabrics,may be handled and infused with the high-temperature RTMable resins such as bismaleimide and polyimide in exactly the same manner as traditional fabrics without surface modification.The RTM conditions for the preform-based toughening is fully compatible with the traditional process procedure,making the technology cost-effective in production.This technology represents a key enabler for the use of low-cost RTM processes for high-temperature resins to supplant prepreg as the building-block material of choice for aeronautical composite structures. | YI XiaoSu CHENG QunFeng LIU ZhiZhen | 2012 | Science China(Technological Sciences)2012，55，8： | 2 |
| 14 | 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 |
| 15 | A controllable reactor of transformer type显示文摘 | TIAN Mingxing LI Qingfu LI Qunfeng | 2004 | IEEE Transactions on Power Delivery2004，19，4： | 1 |
| 16 | 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 |
| 17 | Discovery and biosynthesis of thioviridamide-like compounds显示文摘Thioviridamide-like compounds are a unique subfamily of ribosomally synthesized and post-translationally modified peptides and contain characteristic thioamide bonds and S-[(Z)-2-aminovinyI]-Dcysteine(AviCys). Members of this family are active against a number of cancer cell lines. The distribution, biosynthetic machinery and the mode of action of thioviridamide-like compounds remain largely unknown. In this review, we outlined recent advances in the discovery of thioviridamide-like peptide natural products and the effort in the elucidation of their biosynthetic origin. | Jian Tang Jingxia Lu Qunfeng Luo Huan Wang | 2018 | Chinese Chemical Letters2018，29，7： | 1 |
| 18 | Analytical Calculation of Air-Gap Magnetic Field Distribution and Instantaneous Characteristics of Brushless DC Motors 显示文摘 | Xinghua Wang Qingfu Li Qunfeng Li | 2003 | IEEE TRANSACTIONS ON ENERGY CONVERSION2003，18，3： | 1 |
| 19 | Real and Accrual-Based Earnings Management in the Pre - and Post- IFRS Periods:Evidence from China 显示文摘 | Ho Li-Chin Jennifer Liao Qunfeng Martin Taylor | 2015 | Journal of International Financial Management & Accounting2015，26，3： | 1 |
| 20 | 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 |
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