An Environmentally Benign, Highly Efficient Catalytic Reduction of p-Nitrophenol using a Nano-Sized Nickel Catalyst Supported on Silica-Alumina

2010 ◽  
Vol 352 (7) ◽  
pp. 1169-1178 ◽  
Author(s):  
Islam Hamdy Abd El Maksod ◽  
Eman. Z. Hegazy ◽  
Sayed. H. Kenawy ◽  
Tamer S. Saleh
Keyword(s):  
Nickel Catalyst ◽  
Catalytic Reduction ◽  
Environmentally Benign ◽  
Highly Efficient ◽  
Silica Alumina

Unraveling the real active sites of an amorphous silica–alumina-supported nickel catalyst for highly efficient ethylene oligomerization

2021 ◽  
Author(s):  
Jinghua Xu ◽  
Ruifeng Wang ◽  
Lirong Zheng ◽  
Junguo Ma ◽  
Wenjun Yan ◽  
...  
Keyword(s):  
Nickel Catalyst ◽  
Amorphous Silica ◽  
Active Sites ◽  
Ethylene Oligomerization ◽  
Supported Nickel Catalyst ◽  
The Real ◽  
Highly Efficient ◽  
Silica Alumina

The Ni+ species in a heterogeneous N2-pretreated amorphous silica–alumina-supported nickel catalyst acted as the active sites for ethylene oligomerization.

Environmentally Benign, Highly Efficient and Expeditious Solvent-Free Synthesis of Trisubstituted Methanes Catalyzed by Sulfated Polyborate

2017 ◽  
Vol 2 (35) ◽  
pp. 11693-11696 ◽  
Author(s):  
Valmik P. Jejurkar ◽  
Chetan K. Khatri ◽  
Ganesh U. Chaturbhuj ◽  
Satyajit Saha
Keyword(s):  
Solvent Free ◽  
Environmentally Benign ◽  
Sulfated Polyborate ◽  
Highly Efficient ◽  
Solvent Free Synthesis

scholarly journals The Effect of Tourmaline on SCR Denitrification Activity of MnOx/TiO2 at Low Temperature

Catalysts ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1020
Author(s):  
Yizhe Helian ◽  
Suping Cui ◽  
Xiaoyu Ma
Keyword(s):  
Low Temperature ◽  
Catalytic Reduction ◽  
Catalytic Performance ◽  
Scr Catalyst ◽  
Highly Efficient ◽  
Nh3 Scr ◽  
Catalytic Material ◽  
Acidic Sites ◽  
Denitrification Activity ◽  
The Stability

Selective catalytic reduction (SCR) technology is the most widely used flue gas denitration technology at present. The stability of a catalyst is the main factor limiting the development of this technology. In this study, an environmentally friendly and highly efficient NH3-SCR catalyst was prepared by coprecipitation method from acidolysis residue of industrial waste and tourmaline. We found that the addition of tourmaline has an important impact on the denitration activity of the catalytic material. The NOx conversion exceeded 97% at 200 °C with the dosage of 10% tourmaline, which is about 7% higher than that without doping. The improvement of catalytic performance was mostly attributed to the permanent electrodes of tourmaline, which effectively promotes the dispersion of MnOx/TiO2 catalytic materials, increases the number of acidic sites and changes the valence distribution of manganese ions in products, which speeds up the diffusion of protons and ions, resulting in the acceleration of redox reaction. These as-developed tourmaline-modified MnOx/TiO2 materials have been demonstrated to be promising as a new type of highly efficient low-temperature NH3-SCR catalyst.

scholarly journals Epoxidation of Soybean Oil Catalyzed by [π-C5H5NC16H33]3[PW4O16] with Hydrogen Peroxide and Ethyl Acetate as Solvent

2011 ◽  
Vol 6 (8) ◽  
pp. 1934578X1100600
Author(s):  
Shuang-Fei Cai ◽  
Li-Sheng Wang
Keyword(s):  
Hydrogen Peroxide ◽  
Soybean Oil ◽  
Ethyl Acetate ◽  
Catalytic System ◽  
Elemental Analysis ◽  
Environmentally Benign ◽  
High Recovery ◽  
Highly Efficient ◽  
Excellent Activity

A new environmentally benign and highly efficient catalytic system [π-C5H5NC16H33]3[PO4(WO3)4]/H2O2/CH3COOC2H5 for the epoxidation of soybean oil displayed excellent activity and high recovery. The change of the catalyst during the reaction was investigated by elemental analysis, FTIR and 31P NMR.

Iridium-catalyzed direct C–H arylation of cyclic N-sulfonyl ketimines with arylsiloxanes at ambient temperature

2020 ◽  
Vol 18 (36) ◽  
pp. 7074-7078 ◽  
Author(s):  
Writhabrata Sarkar ◽  
Arup Bhowmik ◽  
Sumit Das ◽  
Aiswarya Balaram Sulekha ◽  
Aniket Mishra ◽  
...  
Keyword(s):  
Ambient Temperature ◽  
Environmentally Benign ◽  
Highly Efficient ◽  
Weakly Coordinating

A highly efficient iridium-catalyzed ortho-selective C–H arylation of weakly coordinating cyclic N-sulfonyl ketimines has been achieved with environmentally benign aryl siloxanes at ambient temperature giving access to a novel class of biaryls.

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