nan 翁维正

Nano-lanthanum Oxyhalide Prepared by Nonaqueous Sol-Gel for Oxidative Coupling of Methane

National Basic Research Program of China (973 Program)[2010CB732303]; National Natural Science Foundation of China[21033006, 20923004, 20373054]

Highly-Dispersed NiO Nanoparticles on SBA-15 for Oxidative Dehydrogenation of Propane to Propylene

National Key Basic Research Program of China (973) [2010CB732303]; National Natural Science Foundation of China [21173173, 21073148, 21033006]; Program for Innovative Research Team of the Ministry of Education of China [IRT1036]; Key Scientific Project of Fujian Province, China [2009HZ0002-1]

丙烷选择氧化制丙烯醛MoBiTeO/SiO 2 催化剂中Te组分的作用

A series of MoBiTeO/SiO2 catalysts with different Te contents was prepared by impregnation method. Effect of Te on the catalysts′structure, acidity and catalytic performance for selective oxidation of propane to acrolein was investigated by XRD, Raman, XPS, NH3-TPD, FT-IR, and performance evaluation techniques. The results indicated that by forming Mo—O—Te bond with the Mo species, tellurium component in the catalyst improved the dispersion of Mo oxide species that would be favorable to the formation of isolate active sites on the catalysts. Besides, Te could be the centers for α-H abstraction of propene and O-insertion to allyl species. So, the addition of Te to MoBiO/SiO2 catalyst promoted the acrolein selectivity greatly. However, the addition of tellurium also could contribute the formation of B acid sites in MoBiTeO/SiO2 catalysts that had been proved to be harmful to the generation of acrolein. Therefore, there existed an optimal scale for the amount of Te-content in the MoBiTeO/SiO2 catalysts. When the nTe/nMo ratio was 0.05-0.1, the catalyst showed the best catalytic performance.

Influence of Ni Chemical States on the Partial Oxidation Mechanism of Methane: An Energetics Analysis

National Natural Science Foundation of China[21033006, 20923004]; Natural Science Foundation of Fujian Province, China[2007J0168]; National Key Basic Research Program of China (973)[2010CB732303]

Catalytic Behaviors and Stability of Aerogel Silica-Supported Ni Catalysts for the Partial Oxidation of Methane into Synthesis Gas

National Key Basic Research Program of China (973) [2010CB732303]; National Natural Science Foundation of China [21033006, 21373169]; Program for Changjiang Scholars and Innovative Research Team in Universities, China [IRT1036]

Synthesis and Catalytic Performances of Mesoporous CeNiO Catalysts for the Oxidative Dehydrogenation of Propane to Propene

National Key Basic Research Program of China (973)[2010CB732300]; National Natural Science Foundation of China[21073148, 21033006, 20803060]; Natural Science Foundation of Fujian Province, China[2009J01038]