Niobium phytate prepared from phytic acid and NbCl5: a highly efficient and heterogeneous acid catalyst

2016 ◽  
Vol 6 (4) ◽  
pp. 1070-1076 ◽  
Author(s):  
Zhimin Xue ◽  
Yuwei Zhang ◽  
Guofeng Li ◽  
Jinfang Wang ◽  
Wancheng Zhao ◽  
...  
Keyword(s):  
High Activity ◽  
Phytic Acid ◽  
Carbonyl Compounds ◽  
Acid Catalyst ◽  
Highly Efficient ◽  
Heterogeneous Acid Catalyst

Niobium phytate, designed from phytic acid and NbCl5, showed high activity for cyanosilylation of carbonyl compounds and dehydration of carbohydrates.

Synthesis of Acetals and Ketals Catalyzed by H4SiW6Mo6O40/SiO2

2012 ◽  
Vol 430-432 ◽  
pp. 289-292
Author(s):  
Shui Jin Yang ◽  
Li Yu ◽  
Yong Kui Huang ◽  
Guo Bin Duan
Keyword(s):  
High Activity ◽  
Sol Gel ◽  
Acid Catalyst ◽  
Reusable Catalyst ◽  
Reaction Parameters ◽  
Catalytic Application ◽  
Heterogeneous Acid Catalyst ◽  
Gel Technique ◽  
Optimized Conditions

Heterogeneous acid catalyst, H4SiW6Mo6O40/SiO2 was synthesized by a sol-gel technique. Catalytic application of the catalyst for synthesis of acetals and ketals were tested. The variation of different reaction parameters on the yield of acetals and ketals were also studied. The yields of acetals and ketals can reach 80.0%~96.9% at the optimized conditions. The high activity and stability of the catalyst is well retained after 4 runs. The results reveal that the H4SiW6Mo6O40/SiO2 catalysis is a novel, effective and reusable catalyst for synthesizing actetals and ketals.

Highly Efficient Solar-driven Photocatalytic Hydrogen Evolution by Ternary 3D ZnIn2S4-MoS2 Microsphere/1D TiO2 Nanobelt Heterostructure

2021 ◽  
Author(s):  
Hanghang Zhou ◽  
Lan Wang ◽  
Hang Shi ◽  
Huan Zhang ◽  
Yue Wang ◽  
...  
Keyword(s):  
Energy Level ◽  
High Activity ◽  
Hydrogen Evolution ◽  
Solvothermal Method ◽  
Semiconductor Materials ◽  
Effective Strategy ◽  
Geometric Structures ◽  
Photocatalytic Hydrogen Evolution ◽  
Highly Efficient ◽  
Tio2 Nanobelts

Combining different semiconductor materials with diverse geometric structures and energy level configurations is an effective strategy for constructing high-activity heterostructure photocatalyst. Using the solvothermal method, 1D TiO2 nanobelts were uniformly...

An efficient heterogeneous acid catalyst derived from waste ginger straw for biodiesel production

2021 ◽  
Author(s):  
Hewei Yu ◽  
Yunlong Cao ◽  
Heyao Li ◽  
Gaiju Zhao ◽  
Xingyu Zhang ◽  
...  
Keyword(s):  
Acid Catalyst ◽  
Biodiesel Production ◽  
Heterogeneous Acid Catalyst
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