魏贤勇
主攻研究方向是煤中有机质的组成结构和高附加值利用。
个性化签名
- 姓名:魏贤勇
- 目前身份:
- 担任导师情况:
- 学位:
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学术头衔:
博士生导师,
- 职称:-
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学科领域:
催化化学
- 研究兴趣:主攻研究方向是煤中有机质的组成结构和高附加值利用。
魏贤勇,汉族,1958年4月14日出生于江苏省徐州市。1982年毕业于南京大学化学系催化化学专业,获理学学士学位;1986年1月至1987年3月作为国家公派留学生在日本东北大学非水溶液化学研究所进修;1987年4月至1992年3月在日本东京大学大学院工学系研究科化学能源工程专业连续攻读硕士和博士学位,1989年3月获工学硕士学位,1992年3月获工学博士学位;1992年4月至10月任日本东京大学工学部外籍研究员;1993年2月起任中国矿业大学教授,1997年9月起任矿物加工工程专业博士生导师,2003年9月起任化学工艺专业博士生导师;1998年9月至11月作为国家公派高级访问学者在日本东北大学反应化学研究所从事研究工作;2002年6月至2003年5月作为韩国政府Brain-Pool项目邀请的高级访问学者在韩国化学研究院化学技术部从事研究工作。学术兼职包括国家自然科学基金委员会第九届化学工程学科评审组成员、国家973计划复评会评审专家、一碳化学与化工第一届学术委员会委员、中国煤炭学会煤化学专业委员会委员、中国化学会应用化学委员会精细化学品化学学科组委会委员、煤炭工业技术委员会资源加工与环境保护专业委员会委员、太原理工大学教育部和山西省煤科学与技术重点实验室学术委员会委员、武汉科技大学兼职教授、西安科技学院客座教授、黑龙江科技学院特聘教授及《燃料化学学报》、《煤炭转化》和《中国矿业大学学报》编委。主攻研究方向是煤中有机质的组成结构和高附加值利用。在国内外率先提出用可分离和非破坏性的方法研究煤中有机质的组成结构和建立分子煤化学理论体系的构想,旨在从分子水平上了解煤中有机质的组成结构,解决煤化学领域的关键科学问题和世界难题。1993年以来完成科研项目10余项,包括国家自然科学基金2项及国家教委优秀年轻教师基金、IET青年教师基金、高等学校博士学科点专项科研基金、煤炭普通高校跨世纪学术带头人培养计划基金、煤炭科学基金和江苏省自然科学基金各1项,作为课题组长承担的国家重点基础研究(973计划)专项经费资助课题在最近的验收中被评为优秀,现在承担高等学校博士学科点专项科研基金1项,参与教育部科学技术研究重点项目、国家自然科学基金西部能源重大研究计划重点项目和973计划项目各1项。近10余年来在煤化学基础研究等方面发表论文243篇,其中39篇被《SCI》收录,34篇被《EI》收录,11篇被《ISTP》收录。在已收集到的121篇文献(作者包括中国、俄罗斯、韩国、日本、土耳其、西班牙、美国和加拿大的专家学者,其中37篇被《SCI》收录)中,魏贤勇的主要论著被引用202次,其中被《SCI》收录的文献引用68次。于1995年被遴选为校后备学科带头人并获第二届江苏省优秀科技工作者荣誉称号,获1996年度国家教委科技进步奖(甲类)三等奖并入选煤炭系统普通高校跨世纪学术带头人培养计划,1997年入选江苏省333跨世纪学术、技术带头人培养工程并被遴选为博士生导师,1998年被列为煤炭系统专业技术拔尖人才,1999年获第二届“江苏青年科学家奖”提名奖,获2000年度中国高校自然科学奖二等奖,2002年获中国矿业大学校级优秀教学成果一等奖、中国矿业大学“九五”“211工程”建设成果二等奖和江苏省高等学校“方正奥思杯”多媒体教学课件竞赛好课件奖,2002年获江苏省优秀研究生课程奖并被江苏省教育厅评为江苏省优秀研究生导师。
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371
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成果数
10
魏贤勇, Jun Wang, ab, Jung-Nam Park, a, Xian-Yong Wei ac, and Chul Wee Lee*a
CHEM. COMMUN., 2003, 628-629,-0001,():
-1年11月30日
Ion-exchanged Naβ zeolite with Fe2+ and Co2+ cations shows high catalytic activity at room temperature in phenol hydroxylation with H2O2, where the conversion of phenol is ca. 21% and the selectivity of benzoquinone is below 3% at a molar ratio of phenol to H2O2 of 3 in the starting aqueous reaction medium.
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魏贤勇, Ya-Fei Ji, *a, Xian-Dao Pan b, Xian-Yong Wei c
SYNLETT 2004, No. 9, pp 1607-1609,-0001,():
-1年11月30日
A solid-phase approach to fluorobenzimidazoles 6a and fluoro-2-hydroxyquinoxalines 6b has been achieved by a new strategy of 'one-bead-two-compound'. The precursor, 6-nitro-2,3,4,5- tetrafluorobenzoic acid, was tagged to Rink amide MBHA resin via an α-amino acid linker. The first nucleophilic substitution generated two regioisomers in which the second active fluorine atom underwent a subsequent nucleophilic substitution with a primary amine. The reduction of the aryl nitro groups with SnCl2·2H2O/NMM and the formation of a five-membered ring with aldehydes afforded 4b and 5a. Fluorobenzimidazoles 6a were directly furnished by cleavage using TFA, therewith the stable six-membered ring 6b was produced by concomitant intramolecular cyclization and thermal dehydrogenation. In addition to introduction of fluorine into the heterocycles, two scaffolds could be simultaneously synthesized with this method.
solid-phase synthesis,, fluorobenzimidazoles,, fluoro-2-hydroxyquinoxalines,, regioselectivity,, ', one-bead-two-compound',
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魏贤勇, Zhong-Hai Ni, Zhi-Min Zong, Li-Fang Zhang, Lin-Bing Sun, Yi Liu, Xin-Hua Yuan, †, and Xian-Yong Wei*
Energy & Fuels 2003, 17, 60-61,-0001,():
-1年11月30日
As a model reaction for coal liquefaction, the hydrocracking of di (1-naphthyl) methane (DNM) was investigated under different reaction conditions. The results show that activated carbon selectively catalyzes DNM hydrocracking and that sulfur has a synergic effect on the activated carbon-catalyzed hydrocracking of DNM. The synergic effect can be ascribed to the catalysis of the activated carbon in H2S dissociation.
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【期刊论文】Convenient Synthesis of N-Methylpyrrolidine-2-thione and Some Thioamides
魏贤勇, Zhi-Min Zong, Yao-Li Peng, Zhi-Gang Liu, Shi-Lu Zhou, Lin Wu, Xiao-Hua Wang, Xian-Yong Wei† and Chul Wee Lee*
Korean J. Chem. Eng., 20 (2), 235-238 (2003),-0001,():
-1年11月30日
The synthesis of thioamides and thiolactams, which are used as important organic intermediates, has attracted great attention. However, expensive reagents, severe reaction conditions and low yields of the target products made conventional methods inconvenient and economically infeasible. To overcome these disadvantages, we investigated a new process for synthesizing thioamides and thiolactams. We examined thermal reactions of CS2 with Nmethyl-2-pyrrolidinone, formylamide, acetamide and N, N-dimethylformylamide, respectively. The results show that under optimum conditions N-methylpyrrolidine-2-thione and the corresponding thioamides can be obtained in good to excellent yields by the above thionation reactions.
CS2,, Amides,, Thionation,, N-Methylpyrrolidine-2-thione,, Thioamides
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【期刊论文】Activated Carbon-Catalyzed Hydrogen Transfer to α, ω-Diarylalkanes
魏贤勇, Lin-Bing Sun, Zhi-Ming Zong, Jia-Hui Kou, Guang-Feng Liu, Xi Sun, and Xian-Yong Wei*, Guo-Jiang Zhou, Chul Wee Lee
,-0001,():
-1年11月30日
Diphenylmethane (DPM), 9-benzylphenanthrene (BP), di(1-naphthyl)methane (DNM), 1,2-di-(1-naphthyl)ethane (DNE), and 9-(1-naphthyl)phenanthrylmethane (NPM) were used as substrates and hydrogen-transfer reactions from molecular hydrogen to the substrates were examined over an activated carbon (AC) under pressurized hydrogen at 300℃. The results show that the AC catalyzes monatomic hydrogen transfer to the substrates and that the reactivities of the substrates toward hydrocracking decrease in the following order: NPM>DNM>BP》DNE》DPM. These results can be interpreted by the differences in the hydrogen-accepting abilities of the ipso-carbons and the resonance stabilities of the leaving radicals.
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【期刊论文】Advances in the study of hydrogen transfer to model compounds for coal liquefaction
魏贤勇, Xianyong Wei a, *, Eisuke Ogata b, Zhimin Zong a, Shilu Zhou a, Zhihong Qin a, Jianzhou Liu a, Kai Shen a, Hongqi Li a
Fuel Processing Technology 62(2000)103-107,-0001,():
-1年11月30日
The advances in the study of hydrogen transfer to model compounds for coal liquefaction are reviewed. The results from many model reactions indicate that molecular hydrogen promotes thermolysis, hydrogenation, and hydrocracking of model compounds, whereas hydrogen-donating solvents inhibit the reactions. Unlike metallic catalysts such as Fe, Pd, and Ni, their sulfides catalyze radical hydrogen transfer to model compounds. The reactivities of model compounds toward hydrocracking depend not only on their hydrogen-accepting abilities, but also on their adsorption strength on catalyst surface and the stabilities of the resulting leaving groups.
Model compound, Coal liquefaction, Hydrogen transfer
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魏贤勇, Hong Zhang, * Ming Zhou, Chao Wang, Ming Sun, Mei Li, and Xianyong Wei
,-0001,():
-1年11月30日
Accurate calibration of mineral composition on calorific value (CV) is essential to gangue utilization, cement production, etc. In this paper the influence of typical minerals on the CV of an anthracite is quantitatively studied. The results indicate that the decomposing rate of calcite decreases with the increase of calcite content during the CV test process. The deviation of CV resulting from calcite decomposition can be calculated according to its decomposing rate, which does not change with the origin of calcite. Kaolinite is transformed mainly to an amorphous solid and some to mullite. Its deviation of CV can be deduced by assuming that kaolinite is totally transformed to an amorphous solid. The complete combustion of pyrite contributes to the increase of CV. The influence of quartz and gypsum can be neglected, as the former does not change during the test and the latter has little heat effect. The composite influence of different minerals on CV can be calibrated according to that of separate minerals when total mass fraction of minerals is high. If the mass fraction is relatively low, overall heat effect produced by each mineral is a little lower than the CV actually determined.
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【期刊论文】Cu2+-Exchanged Zeolites as Catalysts for Phenol Hydroxylation with Hydrogen Peroxide
魏贤勇, Jun Wang, †, JI, Jung-Nam Park, Han-Cheol Jeong, ‡, Kwang-Sik Choi, Xian-Yong Wei, ⊥, Suk-In Hong, §, and Chul Wee Lee*
Energy & Fuels 2004, 18, 470-476,-0001,():
-1年11月30日
The Cu2+-exchanged NaY, HY, USHY, Hβ, and HZSM-5 zeolites were prepared and evaluated in phenol hydroxylation with hydrogen peroxide using an atmospheric batch reactor. CuNaY, CuHY, and CuHβ catalysts were found to be more active than TS-1 or a simple homogeneous copper nitrate catalyst under similar reaction conditions. Both zeolite type and copper content in the zeolite catalyst were revealed to exert critical impact upon the catalytic activity in phenol hydroxylation. Reaction time, reaction temperature, and the molar ratio of phenol to hydrogen peroxide also remarkably influenced the reaction results. The addition of a small amount of hydrochloric acid to the reaction systems significantly enhanced the phenol conversion, hydroxylation selectivity, and reaction rate. The used catalysts can be regenerated completely by calcination at 450℃ for 4h in air. On the basis of ESR spectroscopy, the relationship between catalytic activity and copper loading is explained and the hydroxyl radical is suggested as the reaction intermediate.
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魏贤勇, Zhen-Xue Liu and Ze-Chang Liu, Zhi-Min Zong and Xian-Yong Wei*, Jun Wang†, and Chul Wee Lee
Energy & Fuels 2003, 17, 424-426,-0001,():
-1年11月30日
Longkou brown coal was oxidized by H2O2 at 40℃ for 10h. Water-phase fraction from the reaction mixture was extracted with chloroform to afford chloroform-soluble, chloroform-insoluble but water soluble (CIWS) and solid subfractions. A series of heteroatom(s)-containing organic compounds were detected with GC/MS from the CIWS subfraction. The heteroatoms included O, N, S, and Cl
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【期刊论文】Activated Carbon-Catalyzed Hydrogenation of Polycyclic Arenes
魏贤勇, Lin-Bing Sun, Zhi-Min Zong, Jia-Hui Kou, Li-Fang Zhang, Zhong-Hai Ni, †, Gui-Yun Yu, Hong Chen, and Xian-Yong Wei*
Energy & Fuels 2004, 18, 1500-1504,-0001,():
-1年11月30日
Benzene and four polycyclic arenes (PAs) were used as substrates and their hydrogenation reactions were conducted over activated carbon (AC) at 300℃ to examine the relationship between their molecular structures and reactivities. The results show that the AC catalyzed the hydrogenation of the PAs selectively and that the reactivities of the arenes toward hydrogenation were dependent on the hydrogen-accepting abilities of the arenes and on the adsorption strengths of the arenes on the catalyst surface. The related mechanisms for hydrogen transfer were also discussed.
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