ChemInform Abstract: Acidity Characterization of Solid Acid Catalysts by Solid-State 31P NMR of Adsorbed Phosphorus-Containing Probe Molecules

ChemInform ◽  
2015 ◽  
Vol 46 (1) ◽  
Author(s):  
Anmin Zheng ◽  
Feng Deng ◽  
Shang-Bin Liu
Keyword(s):  
Solid State ◽  
31P Nmr ◽  
Solid Acid ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Probe Molecules ◽  
Phosphorus Containing

Solid-state 31P NMR mapping of active centers and relevant spatial correlations in solid acid catalysts

2020 ◽  
Vol 15 (10) ◽  
pp. 3527-3555 ◽  
Author(s):  
Xianfeng Yi ◽  
Hui-Hsin Ko ◽  
Feng Deng ◽  
Shang-Bin Liu ◽  
Anmin Zheng
Keyword(s):  
Solid State ◽  
31P Nmr ◽  
Solid Acid ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Spatial Correlations ◽  
Active Centers

Preparation and Characterization of Supported H3PW12O40 and Supported Cesium-Substituted Dodecatungstophosphate

2012 ◽  
Vol 509 ◽  
pp. 321-327 ◽  
Author(s):  
Zi Li Liu ◽  
Cui Xia Xu ◽  
Qian Wen Dai ◽  
Chao Xiang ◽  
Jian Jie Zhang
Keyword(s):  
Solid Acid ◽  
Solid Acid Catalysts ◽  
Incipient Wetness Impregnation ◽  
Acid Catalysts ◽  
X Ray Diffraction ◽  
X Ray ◽  
Highly Dispersed ◽  
Probe Experiment ◽  
Ft Ir

Supported H3PW12O40 (HPW) and supported Cesium-Substituted dodecatungsto-phosphate are eco-friendly solid acid catalysts. A series of different loading H3PW12O40/SiO2 and HPW/diatomite were prepared by a typical incipient wetness impregnation of methanol, meanwhile SiO2 and diatomite supported Cs-salt catalysts were prepared via two-step impregnating method. The catalysts were investigated by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). The results indicate that the Keggin structure of HPW is intact in the SiO2-supported HPW and SiO2-supported CsHPW. HPW and CsHPW are highly dispersed in the SiO2 at the low loading, while the loading is more than 40% the catalyst grains increase and gather on the surface of the carrier. What's more, diatomite is not a suitable support. HPW and CsHPW have better distribution in the SiO2 than in the diatomite. The activity of catalyst was tested in probe experiment of the alkylation of thiopene (TH) with 1-hexene.

Synthesis and Characterization of Sulfated Titania Solid Acid Catalysts

1998 ◽  
Vol 37 (10) ◽  
pp. 3869-3878 ◽  
Author(s):  
Ajay K. Dalai ◽  
R. Sethuraman ◽  
Sai P. R. Katikaneni ◽  
R. O. Idem
Keyword(s):  
Solid Acid ◽  
Solid Acid Catalysts ◽  
Synthesis And Characterization ◽  
Acid Catalysts ◽  
Sulfated Titania
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