欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
用浸渍法制备了一系列不同Mo/V比的MoVBiTeO/SiO2催化剂,并用X射线衍射、拉曼光谱、X射线光电子能谱、程序升温还原和红外光谱等方法对催化剂的结构、氧化还原性质和酸性进行了表征,考察了催化剂对丙烷选择氧化制丙烯醛反应的催化性能.结果表明,Mo与V组分之间存在较强的相互作用,调变了催化剂的结构,并形成了氧化还原循环（V^5＋＋Mo^5＋←→V^4＋＋Mo^6＋）,促进了催化剂中电子和O物种的传递,使催化剂的低温可还原性增强,催化活性提高.Mo组分有利于形成L酸位,而V组分有利于形成B酸位.这可能是丙烯醛选择性随Mo/V比增大而逐渐提高的原因之一.当Mo/V摩尔比为6时,催化剂具有最高的丙烯醛收率（9.7%）.
英文摘要：
A series of MoVBiTeO/SiO2 catalyst samples with different Mo/V ratios were prepared by the impregnation method. The catalyst structure, reducibility, and acidity were characterized by XRD, Raman, XPS, TPR, and FT-IR techniques, and the catalytic performance of the catalyst for selective oxidation of propane to acrolein was evaluated. The results indicated that the interaction between Mo and V components modified the catalyst structure, and the redox cycle of V^5＋＋Mo^5＋←→V^4＋＋Mo^6＋ was formed. The improvement in the reducibility of the catalyst might be responsible for the increase in propane conversion. The V and Mo components were responsible for B acid and L acid, respectively. When the Mo/V ratio increased, the amount of B acid decreased, and the catalyst selectivity for acrolein increased. Among the investigated catalyst samples, the sample with a Mo/V molar ratio of 6 exhibited the best catalytic performance.
同期刊论文项目
同项目期刊论文
Autothermal reforming and partial oxidation of methane in fluidized reactor over highly dispersed ni
Effects of calcination temperatures on the catalytic performance of Rh/Al2O3 for methane partial oxi
Production of synthesis gas via methane reforming with CO2 on noble metals and small amount of noble
Low-temperature catalytic performance for oxidative dehydrogenation of propane on nanosized Ti(Zr)-N
Ionic liquid buffers: a new class of chemicals with potential for controlling pH in non-aqueous medi
Ti-Si mixed oxides by non-hydrolytic sol-gel synthesis as potential gold catalyst supports for gas-p
Copper-catalyzed propylene epoxidation by molecular oxygen: Superior catalytic performances of halog
Iron-catalyzed propylene epoxidation by nitrous oxide: Toward understanding, the nature of active ir
Iron-containing heterogeneous catalysts for partial oxidation of methane and epoxidation of propylen
Production of synthesis gas via methane reforming with CO2 on Ni/SiO2 catalysts promoted by alkali a
Characterization and hydroformylation performance of mesoporous MCM-41-supported water-soluble Rh co
Direct conversion of methane to methyl acetate with nitrous oxide and carbon monoxide over heterogen
Coordination structures of vanadium and iron in MCM-41 and the catalytic properties in partial oxida
Catalytic conversion of methane and CO2 to synthesis gas over a La2O3-modified SiO2 supported Ni cat
In situ IR and pulse reaction studies on the active oxygen species over SrF2/Nd2O3 catalyst for oxid
Oxidant-dependent selective oxidation of alcohols utilizing multinuclear copper-triethanolamine comp
Ionic liquids as acid/base buffers in non-aqueous solvents for homogeneous catalysis: A case of sele
Production of syngas via autothermal reforming of methane in a fluidized-bed reactor over the combin
In situ Raman Characterization on the Rh/Al2O3 Calcined at Different Temperature for Methane Partial
Deactivation of Ni catalysts during methane autothermal reforming with CO2 and O-2 in a fluidized-be
Synthesis of high crystallization beta-Ga2O3 micron rods with tunable morphologies and intensive blu
In situ infrared Spectroscopy of active oxygen species for oxidative coupling of methane over BaF2/L
Developing selective oxidation catalysts of light alkanes: From fundamental understanding to rationa
Effect of preparation condition on the performance of silica-supported MoVTeO catalysts for selectiv
Non-oxidative aromatization of C1 and C3 hydrocarbons over Pd-protoned Ga/HZSM-5 catalyst under mild
Studies on the reaction pathways for the selective oxidation of propane to acrolein over MoPO/SiO2 c
Copper-triethanolamine complex as efficient and active catalyst for selective oxidation of alkylaren
Catalytic performance of chiral rhodium complex with water-soluble sulfonated (R)-2,2 '-bis(diphenyl
Biphasic asymmetric hydroformylation and hydrogenation by water-soluble rhodium and ruthenium comple
Recycle and recovery of rhodium complexes with water-soluble and amphiphilic phosphines in ionic liq
Improvement of hydrothermal stability of an ordered mesoporous molecular sieve via multistage recrys
Synthesis and characterization of ordered mesoporous aluminosilicates molecular sieves with highly h
Synthesis and characterization of ordered mesoporous aluminosilicate molecular sieves with high stab
期刊信息
位置：