Effects of surface hydroxyl groups induced by the co-precipitation temperature on the catalytic performance of direct synthesis of isobutanol from syngas

Fuel ◽  
2019 ◽  
Vol 237 ◽  
pp. 1021-1028 ◽  
Author(s):  
Tao Zhang ◽  
Yingquan Wu ◽  
Xiaofeng Gao ◽  
Hongjuan Xie ◽  
Guohui Yang ◽  
...  
Keyword(s):  
Direct Synthesis ◽  
Catalytic Performance ◽  
Hydroxyl Groups ◽  
Surface Hydroxyl ◽  
Precipitation Temperature ◽  
Surface Hydroxyl Groups ◽  
Co Precipitation

Cooperation between the surface hydroxyl groups of Ru–SiO2@mSiO2and water for good catalytic performance for hydrogenation of quinoline

2014 ◽  
Vol 4 (7) ◽  
pp. 1939-1948 ◽  
Author(s):  
Lei Zhang ◽  
Xiaoyan Wang ◽  
Ying Xue ◽  
Xiaojun Zeng ◽  
Hua Chen ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
Core Shell ◽  
Hydroxyl Groups ◽  
Excellent Performance ◽  
Surface Hydroxyl ◽  
Surface Hydroxyl Groups

A new core–shell catalyst showing excellent performance and stability was used in the hydrogenation of quinoline in water.

The synthesis and structure of silica-supported bis(h5-cyclopentadienyl)dichlorotitanium(IV) complexes

1986 ◽  
Vol 51 (7) ◽  
pp. 1430-1438 ◽  
Author(s):  
Alena Reissová ◽  
Zdeněk Bastl ◽  
Martin Čapka
Keyword(s):  
Free Surface ◽  
Hydroxyl Groups ◽  
Titanium Complex ◽  
Surface Hydroxyl ◽  
Surface Hydroxyl Groups ◽  
Free Hydroxyl ◽  
Cyclopentadienyl Anion

The title complexes have been obtained by functionalization of silica with cyclopentadienylsilanes of the type Rx(CH3)3 - xSi(CH2)nC5H5 (x = 1-3, n = 0, 1, 3), trimethylsilylation of free surface hydroxyl groups, transformation of the bonded cyclopentadienyl group to the cyclopentadienyl anion, followed by coordination of (h5-cyclopentadienyl)trichlorotitanium. The effects of single steps of the above immobilization on texture of the support, the number of free hydroxyl groups, the coverage of the surface by cyclopentadienyl groups and the degree of their utilization in anchoring the titanium complex have been investigated. ESCA study has shown that the above anchoring leads to formation of the silica-supported bis(h5-cyclopentadienyl)dichlorotitanium(IV) complex.

Controllable synthesis of phosphate-modified BiPO4 nanorods with high photocatalytic activity: surface hydroxyl groups concentrations effects

RSC Advances ◽  
2015 ◽  
Vol 5 (121) ◽  
pp. 99712-99721 ◽  
Author(s):  
Yan Li ◽  
Yawen Wang ◽  
Yu Huang ◽  
Junji Cao ◽  
Wingkei Ho ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Surface Modification ◽  
Photocatalytic Performance ◽  
High Photocatalytic Activity ◽  
Hydroxyl Groups ◽  
Controllable Synthesis ◽  
Surface Hydroxyl ◽  
Methylene Orange ◽  
Surface Hydroxyl Groups

Surface modification by phosphate efficiently improves the photocatalytic performance of BiPO4 for the degradation of methylene orange (MO), by enhancing the concentration of surface hydroxyl groups and improving its hydrophilicity.

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