李小年
博士 教授
浙江工业大学 化材学院
一直从事催化技术与工程领域的前沿科学问题研究,致力于新型合成氨催化剂开发、负载可控尺寸纳米贵金属催化剂制备技术和生物质催化转化制备大宗化工产品等理论研究和工程应用开发。
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- 姓名:李小年
- 目前身份:在职研究人员
- 担任导师情况:
- 学位:博士
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学术头衔:
博士生导师, 教育部“新世纪优秀人才支持计划”入选者
- 职称:高级-教授
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学科领域:
催化化学
- 研究兴趣:一直从事催化技术与工程领域的前沿科学问题研究,致力于新型合成氨催化剂开发、负载可控尺寸纳米贵金属催化剂制备技术和生物质催化转化制备大宗化工产品等理论研究和工程应用开发。
李小年,男,浙江龙游人,1963年2月出生,博士,教授,博士生导师,现任浙江工业大学校长、党委副书记。1984年毕业于浙江工学院化工系并留校任教,1989年获浙江工学院工学硕士学位,1998年获中国科学院山西煤炭化学研究所理学博士学位,1999年破格晋升教授,2000年7月-2002年10月在加拿大不列颠哥伦比亚大学做访问学者和美国橡树岭国家实验室做博士后研究。1984年8月至1998年10月先后任浙江工学院化工系教师、催化研究所副所长、多相催化省重点实验室副主任;1998年10月任浙江工业大学化学工程学院副院长,2002年12月任绿色化学合成技术国家重点实验室培育基地副主任,2003年12月任浙江工业大学化学工程与材料学院院长;2006年4月任浙江工业大学党委委员、化学工程与材料学院院长,2006年5月任浙江工业大学党委委员、研究生院(筹)常务副院长,2010年3月至2011年1月任浙江大学研究生院副院长(挂职),2012年2月起任浙江工业大学党委委员、副校长,2015年4月至2015年7月任南京大学校长助理(挂职),2016年4月起任浙江工业大学党委副书记,2017年7月起任浙江工业大学校长、党委副书记。主要从事工业催化剂技术与绿色工艺等的研究,曾获国家发明二等奖1项、省部级一等奖4项和中国青年科技奖等。现兼任中国化工学会化肥专业委员会副主任委员、教育部化工类专业教学指导委员会委员、浙江省化学类与化工制药类专业教学指导委员会主任委员、中国自然辩证法研究会常务理事、浙江省自然辩证法研究会理事长、浙江省化工学会副理事长、《高校化学工程学报》和《浙江化工》编委会副主任、《工业催化》编委。入选新世纪国家百千万人才工程;被授予“浙江省有突出贡献的中青年科技专家”、“全国模范教师”、“全国先进工作者”等称号,享受国务院政府特殊津贴。
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成果阅读
1049
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成果数
12
李小年, LIU Huazhang and LI Xiaonian **
SCIENCE IN CHINA (Series B) May 1995, Vol. 38, No.5,-0001,():
-1年11月30日
The relationship between the activity and the precursor phase composition of the molten iron catalyst for ammonia syntbesis has been studied with high pressure testing equipment and XRD. A humped curve between the activity and Fe2+/Fe3+ has been obtained. It is found that the unicity of the iron oxidate phase in precursor is an essential condition of the hlgh activity of the iron catalyst and that the uniform distribution of the adominant phase and the promoters is the key to preparing a catalyst with better performance The humped curve is interpreted using the ratio f of the phase compositions in precursor. A new idea has been obtained that the actlvity change of the molten iron catalyst depends essentially on the mol-ecule ratio of the different iron oxdates in precursor under the certain promoters, and it is found that the FeO based catalyst for alnmonua syntbesis with Wustite phase structure (Fe1-xO, 0.04≤x≤0.10) has the highest activity of all the molten iron catalysts for ammonia synthesis.
ammonia synthesis catalyst,, precursor phase composition,, Fel-xO (, Wfistite), ,, molecule ratio f,, iron ratio R (, Fe2+, /, Fe3+, ), .,
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李小年, Chun Hui ZHOU*, Zhong Hua GE, Xiao Nian LI, Hong Qiang GUO, Jian SUN
Chinese Chemical Letters Vol. 14, No.12, pp 1285-1288, 2003,-0001,():
-1年11月30日
A mesoporous titanium/silicon-containing montmorillonite-based catalytic materials has been synthesized by novel gallery-templated techniques. XRD, SEM, framework IR, and N2 adsorption-desorption isotherms provided evidence of the formation of Si/Ti pillars. The synthetic materials show potential catalytic application for hydroxylation of phenol with peroxide.
Mesoporous materials,, montmorillonite,, pillared clay,, hydroxylation of phenol.,
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李小年, Xiaonian Li a*, Yaqing Cen a, Huazhang Liu a, Yusheng Xu b and Guanglie Lv c
React.Kinet.Catal.Lett. Vol. 81, No.2, 313-320 (2004),-0001,():
-1年11月30日
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【期刊论文】Study on the Carbon-Methanation and Catalytic Activity of Ru/AC for Ammonia Synthesis*
李小年, ZHU Yifeng, LI Xiaonian*, JI Dechun and LIU Huazhang
Chinese J. Chem. Eng., 12(3)384-387 (2004),-0001,():
-1年11月30日
The effects of promoters K, Ba, Sm on the resistance to carbon-methanation and catalytic activity of ruthenium supported on active carbon (Ru/AC) for ammonia synthesis have been studied by means of TG-DTG (thermalgravity-differential thermalgravity), temperature-programmed desorption, and activity test. Promoters Ba, K, and Sm increased the activity of Ru/AC catalysts for ammonia synthesis significantly. Much higher activity can be reached for Ru/AC catalyst with bi- or tri-promoters. Indeed, the triply promoted catalyst showed the highest activity, coupled to a surprisingly high resistance to methanation. The ability of resistance of promoter to methanation of Ru/AC catalyst is dependent on the adsorption intensity of hydrogen. The strong adsorption of hydrogen would enhance methanation and impact the adsorption of nitrogen, which results in the decrease of catalytic activity.
ruthenium,, catalyst,, methanation,, ammonia synthesis
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李小年, ZHU Yifeng(祝一锋), LI Xiaonian(李小看)**, ZHOU Chunhui(周春晖), GAO Dongmei(市冬梅) and LIU Huazhang(刘化章)
Chinese J. Chem. Eng., 11(1)15-18 (2003),-0001,():
-1年11月30日
The effects of promoters K, Ba, Sm on the chemisorption and desorption of hydrogen and nitrogen, dispersion of metallic Ru and catalytic activity of active carbon (AC) supported ruthenium catalyst for ammonia synthesis have been studied by means of pulse chromatography, temperature-programmed desorption, and activity test. Promoters K, Ba and Sm increased the activity of l=tu/AC catalysts for ammonia synthesis significantly, and particularly, potassium exhibited the best promotion on the activity because of the strong electronic donation to metallic Ru. Much higher activity can be obtained for Ru/AC catalyst with binary or triple promoters. The activity of Ru/AC catalyst is dependent on the adsorption of hydrogen and nitrogen. The high activity of catalyst could be ascribed to strong dissociation of nitrogen on the catalyst surface. Strong adsorption of hydrogen would inhibit the adsorption of nitrogen, resulted in decrease of the catalytic activity. Ru/AC catalyst promoted by Sm203 shows the best dispersion of metallic Ru, since the partly reduced SmO~ on the surface modifies the morphology of active sites and favors the dispersion of metallic Ru. The activity of Ru/AC catalysts is in accordance to the corresponding amount of nitrogen chemisorption and the desorption activation energy of nitrogen. The desorption activation energy for nitrogen decreases in the order of Ru>Ru-Ba>Ru-Sm>Ru-Ba-Sm>Ru-K>Ru-K-Sm>Ru-K-Ba>Ru-K-Ba-Sm, just opposite to the order of catalytic activity, suggesting that the ammonia synthesis over Ru-based catalyst is controlled by the step of dissociation of nitrogen.
ruthenium,, catalyst,, ammonia synthesis,, chemisorption,, desorption
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【期刊论文】Removal of Carbon Dioxide from Flue Gas by Ammonia Carbonation in the Gas Phase
李小年, Xiaonian Li, Edward Hagaman, Costas Tsouris, and James W. Lee*
Energy & Fuels 2003, 17, 69-74,-0001,():
-1年11月30日
The increasing anthropogenic CO2 emissions and possible global warming have challenged the United States and other countries to find new and better ways to meet the world's increasing needs for energy while, at the same time, reducing greenhouse gas emissions. This study explores the possibility of using ammonium bicarbonate (NH4HCO3) formation by ammonia carbonation in the gas phase to achieve reduction of CO2 emissions from industrial flue gas. Experimental results obtained in this study demonstrate that removal of flue-gas CO2 can be achieved via formation of solid NH4HCO3 through ammonia carbonation in the gas phase. Removal of CO2 is quantified by monitoring CO2 concentrations at the entrance and exit of the reactor column. The products of ammonia carbonation were identified by solid-state nuclear magnetic resonance analysis. For the experimental conditions employed in this study, current results show up to 50% removal of CO2 from the flue gas. Higher efficiencies are likely achievable by optimizing the operating conditions and geometry of the reactor.
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【期刊论文】Metal-support interaction effects on the growth of filamentous carbon over Co/SiO2 catalysts
李小年, Xiaonian Li, Yi Zhang, Kevin J. Smith∗
Applied Catalysis A: General 264(2004)81-91,-0001,():
-1年11月30日
The addition of BaO, La2O3 and ZrO2 to the SiO2 support of a 12wt.% Co/SiO2 catalyst modifies the reduction behavior of Co species and leads to changes in metal dispersion. These changes are due to a modified metal-support interaction (MSI) between cobalt species and the MexOy/SiO2 (MexOy: BaO, ZrO2 and La2O3) support. Catalyst characterization by temperature-programmed reduction (TPR) and X-ray photoelectron spectroscopy (XPS) have been used to determine the relative strength of the MSI and the results suggest an increasing MSI in the order Co/SiO2 ≈ Co/BaO/SiO2 < Co/La2O3/SiO2 < Co/ZrO2/SiO2. The rate of catalyst deactivation during methane decomposition (CH4 ⇔ C+2H2) is shown to increase with increasing MSI. Analysis of the used catalysts also shows that an increasing rate of deactivation correlates with an increasing amount of graphitic carbon versus carbidic carbon on the used catalyst. It is suggested that an increase in graphitic carbon is a consequence of a strong MSI that limits carbon removal from the metal surface by filament formation. Consequently, graphitic, encapsulating carbon is formed from the carbon deposited during methane decomposition, leading to deactivation of the catalyst.
Metal-support interaction, Catalyst deactivation, Methane decomposition, Filamentous carbon formation, Carbidic carbon
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李小年, Liu Huazhang, * Liu Caibo, Li Xiaonian, and Cen Yaqing
Ind. Eng. Chem. Res. 2003, 42, 1347-1349,-0001,():
-1年11月30日
The effects of various iron oxide precursors of an ammonia synthesis catalyst on the H2 desorption performance were studied by means of H2 temperature-programmed desorption (TPD). Among the three precursors being studied, which are Fe3O4, Fe1-xO, and their mixture, both traditional Fe3O4-based and a mixed oxide of FeO and the Fe3O4-based catalyst after reduction have three H2 adsorbed states of R1, R2, and R3 on the H2 TPD spectrum. Therein, R1 and R2 may be the H2 chemisorption states that they can react with N2 to form ammonia, and R3 should be a strong H2 chemisorption state that cannot react with N2. However, the Fe1-xO-based catalyst after reduction is in the absence of R3 adsorbed states, and R1 may be a H2 physisorption state. This is a remarkable character of the Fe1-xO-based catalyst. The order of the H2 desorption activation energy is as follows: two-phase region (Fe3O4
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【期刊论文】Synthesis and acid catalysis of nanoporous silica/alumina-clay composites
李小年, Chunhui Zhou∗, Xiaonian Li∗, Zhonghua Ge, Qinwei Li, Dongsheng Tong
Catalysis Today 93-95(2004)607-613,-0001,():
-1年11月30日
A novel nanoporous silicoaluminum montmorillonite heterostructured composite (denoted Si/Al-MMT) has been synthesized based on ion exchange and self-assembly techniques. Powder X-ray diffraction (PXRD), thermogravimetric analysis (TGA), transmission electron microscopy (TEM),N2 adsorption-desorption and Fourier transform infra-red (FTIR) spectroscopy were employed to characterize the synthetic Si/Al-MMT. The synthetic Si/Al-MMT composites exhibit a basal spacing of 3.45nm, gallery height of 2.39nm, a BET surface area of 502m2/g and silt width of 2.0nm. The thermal stability of Si/Al-MMT can reach 750℃. Compared to silica-montmorillonite heterostructured composites (Si-MMT) prepared through the analogous procedures, the thermal stability of Si/Al-MMT was lower due to the pillar formation of mixed oxide structure. The synthetic Si/Al-MMT composites are potentially effective solid acid catalysts for the Friedel-Crafts alkylation of catechol with tert-butyl alcohol to synthesize butyl 4-tert-butylcatechol (4-TBC). Under experimental condition, the conversion of catechol is 76.8% and the selectivity of 4-TBC is 85.2% over synthetic nanoporous Si/Al-MMT catalysts. Combined with pyridine and ammonium adsorption, the results show that the Lewis acidity can be improved with the addition of aluminum to pillars. Both the acidity and pore structure have effects on the conversion of catechol and the distribution of products.
Montmorillonite, Pillared clays, Nanoporous materials, Catalysis, Catechol alkylation, 4-Tert-butylcatechol
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【期刊论文】Analysis on Ammonia Synthesis over Wiistite-Based Iron Catalyst*
李小年, LI Xiaonian(李小年)**, LIU Huazhang(刘化章), CEN Yaqing(岑亚青) and HU Zhangneng(胡樟能)
Chinese J. Chem. Eng., 11(1)19-26 (2003),-0001,():
-1年11月30日
W/istite-based catalyst for ammonia synthesis exhibits extremely high activity and easy to reduction under a wide range of conditions. The reaction kinetics of ammonia synthesis can be illustrated perfectly by both the classical Temkin-Pyzhev and modified Temkin equations with optimized (of 0.5. The pre-exponent factors and activation energies at the pressures of 8.0 and 15.0MPa are respectively k0-1.09-1015, 7.35-1014pa5.s-1, and E-156.6, 155.5kJ.mo1-1 derived from the classical Temkin-Phyzhev equation, as well as k0-2.45 x 1014, 1.83 x 1014 Pa5.s-1, and E-147.7, 147.2kJ.mo1-1 derived from the modified Temkin equation. Although the degree of reduction under isothermal condition is primarily dependent upon temperature, low pressure seems to be imperative for reduction under high temperature and low space velocity to be considered as a high activity catalyst. The reduction behavior with dry feed gas can be illustrated perfectly by the shrinking-sphere-particle model, by which the reduction-rate constants of 4248exp (-71680/RT) and 644exp (-87260/RT) were obtained for the powder (0.045-0.054mm) and irregular shape (nominal diameter 3.17 ram) catalysts respectively. The significant effect of particle size on reduction rate was observed, therefore, it is important to take into account the influence of particle size on reduction for the optimization of reduction process in industry. Keywords wiistite-based catalyst, ammonia synthesis, catalytic activity, reduction behavior, kinetics
wiistite-based catalyst,, ammonia synthesis,, catalytic activity,, reduction behavior,, kinetics
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