周小平
长期从事催化领域的研究工作。
个性化签名
- 姓名:周小平
- 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:
化工系统工程
- 研究兴趣:长期从事催化领域的研究工作。
周小平博士,获厦门大学(1993年)和美国加州大学UCSB(2000年)博士学位,现任湖南大学化学化工学院教授,副院长。培养、指导硕士生二十多名,指导博士生四名。入选“新世纪百千万人才工程”国家级人选,享受国务院政府特殊津贴。曾在仰恩大学、厦门大学任教,1995~1996年在香港浸会大学从事“烷烃氧化制烯烃金属氟氧化物催化剂的研究”。1996~2002年在美国先后担任过硅谷高科技公司Symyx Technologies Inc.的Associate Scientist和GRT Inc.公司技术开发部的Principal Scientist及科学顾问。长期从事催化领域的研究工作,发明的金属氟氧化物催化剂体系曾引起国际同行的重视,美国著名商业杂志Chemical & Engineering News曾特别报道,并吸引了美国联合碳化公司合作;将组合化学方法用于多相催化催化研究中,发展了一系列快速合成和检测方法,设计了能同时进行几百个催化剂的现场合成的合成方法,并成功设计了能同时进行400个催化反应的高压并行反应器;开发了甲醇、二甲醚、醋酸、丙烯、环氧丙烷、苯胺等催化合成新流程。在Symyx公司和GRT公司承担德国 Hoechst A. G.和Bayer等跨国公司的重大研究开发项目,目前承担国家自然科学基金两项(100万)、教育部新世纪优秀人才计划项目1项(50万)和“211工程”重点建设项目(200万)。取得了一系列原创性成果,已申请US、WO、EP等国外发明专利近40项和中国发明专利15项,已授权40项;在国内外发表学术研究论文70多篇,三大检索共60多篇。
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642
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成果数
10
【期刊论文】THE OXIDATIVE COUPLING OF METHANE AND THE ACTIVATION OF MOLECULAR O2 ON CEO2/BAF2
周小平, ZHOU XP, CHAO ZS, WENG WZ, ZHANG WD, WANG SJ, WAN HL, TSAI KR
CATALYSIS LETTERS 29 (1-2): 177-188 1994,-0001,():
-1年11月30日
CeO2/BaF2 was used as the catalyst for the oxidative coupling of methane (OCM). At 800-degrees-C and CH4: O2= 2.7: 1, CH4 conversion of 34% with C2 hydrocarbon selectivity of 54.3% was obtained. XRD measurement showed that partial anion (O2-, F-) and/or cation (Ce4+, Ba2+) exchange between CeO2 and BaF2 lattices occurred. ESR study showed that O-species existed on degassed catalyst. XPS study revealed that, when BaF2 was added to CeO2, the binding energy of Be 3d5/2 was 2.2 eV lower than that in CeO2, and the'' electron-enriched lattice oxygen'' species was detected. XPS, ESR and Raman study showed that, under O2 adsorbing conditions, O2(2-) and O2-species were detected on CeO2/BaF2.
OXIDE CATALYSTS,, MATRIX REACTIONS,, OXYGEN CARRIERS,, MAGNESIUM-OXIDE,, SOLIDSOLUTIONS,, METAL-OXIDES,, ADSORPTION,, SURFACE,, MGO,, HYDROGEN
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【期刊论文】Photodegradation catalyst screening by combinatorial methodology
周小平, Qi Xiu Dai, Hai Yuan Xiao, Wen Sheng Li, Yan Qing Na, Xiao Ping Zhou*
Applied Catalysis A: General 290 (2005) 25-35,-0001,():
-1年11月30日
In this work, a combinatorial methodology was developed for photodegradation catalyst screening. A fluorescence imaging detection system was designed for high throughput analysis, 1, 6-hexamethylenediamine was used as the probe molecule for catalyst testing. The photodegradation activity of catalysts was evaluated by 1, 6-hexamethylenediamine consumption during the hotodegradation reaction. The methodology could provide reliable results. We found that pure TiO2, ZrO2, Nb2O5, MoO3, and WO3 did not show much activity for 1, 6-hexamethylenediamine photodegradation under visible light. TiO2 catalysts doped with different metal ions were tested. When TiO2 was doped with Ta2O5, Nb2O5, V2O5, MoO3, or WO3, higher activity for photodegradation was observed. The doping of La3+, Ba2+, and Br- to TiO2 did not improve the catalytic activities. When doping TiO2 with Mn2+, Cl-, Al3+, Cu2+, Fe3+, Na+, Mg2+, Li+, F-, Co2+, or K+, catalytic activity was lower than that of pure TiO2. After elaborate catalysts screening, we discovered new catalysts, such as 50-70% TiO2/0-20% WO3/20-40% VO2.5 and 20-30% TiO2/30-50% MoO3/40-60% VO2.5 as well as 30% WO3/20% ZrO2/50% NbO2.5 (synthesized from ZrCl4, NbCl5, and (NH4) 5H5 [H2 (WO4) 6]
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【期刊论文】Acetic acid synthesis from methane by non-synthesis gas process
周小平, Kuan Xin Wang, Han Fei Xu, Wen Sheng Li, Xiao Ping Zhou*
Journal of Molecular Catalysis A: Chemical 225 (2005) 65-69,-0001,():
-1年11月30日
Acetic acidwas synthesized from methane by non-syngas process. In the process, methanewas brominated with hydrogen bromide (40wt.% HBr/H2O) and oxygen to give CH3Br and CO over a Ru/SiO2 catalyst. The as-generated CO and CH3 Br reacted with water under the catalysis of RhCl3 to produce acetic acid, methanol, and methyl acetate. In the first step oxidative bromination reaction, 30.1% of methane single pass conversion with 72.4% of CH3Br selectivity and 25.5% of CO selectivity was attained. In the second step, almost 100% CH3Br conversion was reached.
Methane, Bromomethane, Acetic acid, Oxidative bromination, Catalyst
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【期刊论文】An integrated process for partial oxidation of alkanes
周小平, Xiao-Ping Zhou, a, Aysen Yilmaz, Gurkan A. Yilmaz, Ivan M. Lorkovic, Leroy E. Laverman, Michael Weiss, b, Jeffrey H. Sherman, Eric W. McFarland, *bc, Galen D. Stucky*a and Peter C. Ford*a
CHEM. COMMUN., 2003, 2294-2295,-0001,():
-1年11月30日
The partial oxidation of alkanes via bromination followed by the reaction with solid metal oxide mixtures (MO) is shown to give an array of products that can be tuned by varying the MO and the reaction conditions.
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【期刊论文】Dimethyl ether synthesis from methane by non syngas process
周小平, Han Fei Xu*, Kuan Xin Wang, Wen Sheng Li, and Xiao Ping Zhou
Catalysis Letters Vol. 100, Nos. 1-2, March 2005,-0001,():
-1年11月30日
Dimethyl ether is a potential clean fuel and intermediate for other chemical synthesis, such as gasoline, ethylene, and acetic acid. To synthesize dimethyl ether from the traditional syngas process is an energy consuming process. More than one fourth of natural gas must be burned to generate heat for the steam reformation of natural gas. Here, we show a non-syngas process to synthesize dimethyl ether. This process consists of the conversion of methane to bromomethane by reacting methane with hydrogen bromide and oxygen and the hydrolysis of bromomethane to dimethyl ether. Through this process, methane can be high efficiently converted to dimethyl ether.
oxidative bromination, catalysis, methane, dimethyl ether.,
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【期刊论文】Photodegradation Catalyst Discovery by High-Throughput Experiment
周小平, Qi X. Dai, Hai Y. Xiao, Wen S. Li, Yan Q. Na, and Xiao P. Zhou*
J. Comb. Chem. 2005, 7, 539-545,-0001,():
-1年11月30日
A high-throughput experimental methodology was developed for photocatalysis reaction. In this work, a CCD imaging analysis system and photocatalytic reactor for UV light was designed and tested. By making use of the technologies, we have screened several catalyst libraries. From the SiO2-supported single component catalyst library, we found that TiO2, ZrO2, Nb2O5, and WO3 were good candidates for highly active catalyst formulation. We designed and screened several triangle catalyst libraries and found that the WO3-and Nb2O5-codoped TiO2 catalyst showed much higher photodegradation activities for the degradation of 1, 6-hexamethylenediamine than did the pure TiO2 catalyst. The doping of ZrO2 into TiO2 did not generate apparent positive effects on catalytic activity.
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周小平, Jie Tang, Chuan X. Chen, Wen S. Li, Xiao P. Zhou*
Applied Catalysis A: General 287 (2005) 197-202,-0001,():
-1年11月30日
Propane-selective oxidation was investigated over VMoO alone or over VMoO catalysts promoted by metal ions. Through this reaction, propane was efficiently converted to maleic anhydride, and acetic acid over VMoO itself and over metal-ion-doped VMoO catalysts. Over 70%Mo20%V10%AgO catalyst, 37.4% of propane single pass conversion was obtained at 300℃ with maleic anhydride selectivity of 53.6% and acetic acid selectivity of 38.9%. The studies on propylene oxidation indicated that propylene might not be a reaction intermediate for maleic anhydride formation in propane oxidation. A typical carbon-carbon bond cracking and reformation reaction occurred in propane oxidation by using molecular oxygen as oxidant.
Propane oxidation, Catalyst, Maleic anhydride, Acetic acid
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【期刊论文】The Characterization of BaF2/Y2O3 Catalysts for the OCM Reaction
周小平, C.T. Au, , X.P. Zhou, Y.W. Liu, W.J. Ji, and C.F. Ng
JOURNAL OF CATALYSIS 174, 153-163 (1998),-0001,():
-1年11月30日
The reactivities of Y2O3 and BaF2/Y2O3 catalysts have been investigated for the oxidative coupling of methane (OCM) reactions. With CH4: O2: N2= 2.47: 1: 11.4 and a total flow rate of 50 mL min-1, after 4 h of reaction time at 750℃, the CH4 conversion and C2 selectivity over Y2O3 were 29.9 and 26.2%, respectively, giving a C2 yield of 7.8%. When 30 mol% of BaF2 was added, the CH4 conversion, C2 selectivity, and C2 yield were enhanced to 35.3, 55.4, and 19.5%, respectively. With a 95 mol% BaF2/Y2O3 catalyst, we could achieve a 22.4% C2 yield with CH4 conversion and C2 selectivity, respectively, equal to 36.1 and 62.1%. X-ray diffraction (XRD) investigation of the BaF2/Y2O3 catalysts revealed that the cubic Y2O3 lattice had expanded slightly while the cubic BaF2 phase contracted. Based on the results of O2 absorption as well as temperature-programmed reduction (TPR) studies, we know that the BaF2/Y2O3 catalysts have higher ability inO2 activation than the undoped Y2O3 catalyst. We suggest that the ionic exchange which occurred between the BaF2 and Y2O3 phases caused the generation of active defects. We used the EPR technique to monitor the generation of trapped electrons in the 95 mol% BaF2/Y2O3 catalyst. The esults indicated that there were reducible oxygen ions which existed largely in the bulk. After H2 reduction between 500 and 700℃, a kind of trapped electron with EPR signal centered at 2.0871 was formed. H2 reduction above 700℃ could result in the generation of another type of trapped electron with EPR signal centered at 2.0087. The 2.0871 signal showed doublet superhyperfine structures while the 2.0087 one was symmetrical. We interpret the former as being due to trapped electrons interacting with the Y3+ ions, while the latter due to trapped electrons shared among the orbitals of the surrounding cations. The 2.0871 trapped electrons spread throughout the sample, while the 2.0087 ones existed only on the surface. The involvement of surface-trapped electrons in activating O2 was observed at 25℃, while above 500℃, trapped electrons in the bulk were also involved. According to the results obtained, we have reasons to believe that in the OCM reaction, the BaF2/Y2O3 catalysts were reduced by hydrogen dissociated from methane, and trapped electrons were generated. These trapped electrons could serve as active sites for O2 activation.
OCM reaction, BaF2/, Y2O3 catalysts, O2 activation, trapped electrons.,
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【期刊论文】Oxidative dehydrogenation of ethane over BaF2-LaOF catalysts
周小平, X.P. Zhou, Z.S. Chao, J.Z. Luo, H.L. Wan*, K.R. Tsai
Applied Catalysis A: General 133 (1995) 263-268,-0001,():
-1年11月30日
The oxidative dehydrogenation of ethane was investigated on LaOF and BaF2-LaOF catalysts. It was found that BaF2-LaOF was more effective than LaOF for the catalytic conversion of ethane to ethylene. A selectivity of 74% for ethylene was obtained at 55% ethane conversion over 8mol-%BaF2- LaOF compared with a selectivity of 58.5% for ethylene at 44.6% ethane conversion over LaOF under the same conditions: reaction temperature 660℃, C2H6: 02=67.7: 32.3 and a feed gas flow-rate of 90 ml/min. It was also found that part of the ethylene in the products was produced by the thermal cracking of ethane. X-ray diffraction results showedthat, when the molar percentage of BaF2 in BaF2- LaOF was less than 18%, only tetragonal LaOF was observed, and when the molar percent of BaF2 in BaF2-LaOF increased from 18% to 50%, tetragonal LaOF and lattice-contracted BaF2 were observed.
BaF2-LaOF catalyst, Oxidative dehydrogenation of ethane, Ethane
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【期刊论文】METHANE OXIDATIVE COUPLING OVER FLUORO FLUORO-OXIDE CATALYSTS
周小平, ZHOU XP, ZHANG WD, WAN HL, TSAI K
CATALYSIS LETTERS 21 (1-2): 113-122 1993,-0001,():
-1年11月30日
LaF3 modified ZrO2, CeO2 and ThO2 catalysts for the oxidative coupling of methane indicate that ZrO2/LaF3, CeO2/LaF3 and ThO2/LaF3 Catalysts have high activity and high selectivity at low temperature. In the temperature region 480-650-degrees-C, the methane conversion is 24.38-30.8% and the C2= selectivity is 40-55.38%. The characterization of oxygen species on the catalysts indicates that, because of the modification of LaF3 to ZrO2, CeO2 and ThO2, it is favourable for the activation of O2.
ACTIVE CATALYSTS,, OXYGEN MOLECULES,, MATRIX REACTIONS,, SURFACE,, ADSORPTION,, SPECTRA,, AG (, 110), ,, ATOMS
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