Sterically Controlling 2-Carboxylated Imidazolium Salts for One-Step Efficient Hydration of Epoxides into 1,2-Diols

2021 ◽  
Author(s):  
Qian Su ◽  
Xin Tan ◽  
Xiaoqian Yao ◽  
Ting Ying ◽  
Li Dong ◽  
...  
Keyword(s):  
Imidazolium Salts ◽  
Efficient Catalyst ◽  
Conventional Process ◽  
One Step ◽  
Excessive Water

In order to overcome the disadvantages of excessive water and much byproducts in conventional process of epoxide hydration into 1,2-diols, 2-carboxylated imidazolium salts was first adopted as efficient catalyst for...

Uncatalyzed, on water oxygenative cleavage of inert C–N bond with concomitant 8,7-amino shift in 8-aminoquinoline derivatives

2019 ◽  
Vol 21 (7) ◽  
pp. 1735-1742 ◽  
Author(s):  
Vinayak Botla ◽  
NavyaSree Pilli ◽  
Chandrasekharam Malapaka
Keyword(s):  
Room Temperature ◽  
Efficient Catalyst ◽  
Catalyst Free ◽  
One Step

Oxygenative cleavage of an inert CAr–NH2 bond with concomitant 1,2 amine migration in 8-aminoquinoline derivatives is achieved through an efficient, catalyst free, one step synthesis of 8-benzyloxy, 7-aminoquinoline directly from 8-aminoquinoline in water at room temperature.

scholarly journals Electrospun Bimetallic NiCr Nanoparticles@Carbon Nanofibers as an Efficient Catalyst for Hydrogen Generation from Ammonia Borane

Nanomaterials ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 1082 ◽  
Author(s):  
Robert M. Brooks ◽  
Ibrahim M. Maafa ◽  
Abdullah M. Al-Enizi ◽  
M. M. El-Halwany ◽  
Mohd Ubaidullah ◽  
...  
Keyword(s):  
Carbon Nanofibers ◽  
Hydrogen Generation ◽  
Ammonia Borane ◽  
Catalytic Performance ◽  
Inert Atmosphere ◽  
Nicr Alloy ◽  
Efficient Catalyst ◽  
Nickel Acetate Tetrahydrate ◽  
One Step ◽  
Nanofiber Mats

In this study, we report on the fabrication and utilization of NiCr alloy nanoparticles (NPs)-decorated carbon nanofibers (CNFs) as efficient and competent non-precious catalysts for the hydrolytic dehydrogenation of ammonia borane (AB) at 25 ± 2 °C. The introduced NFs have been fabricated in one step using a high-temperature thermal decomposition of the prepared electrospun nanofiber mats (nickel acetate tetrahydrate, chromium acetate dimer, and polyvinyl alcohol) in an inert atmosphere. The chemical composition of the NFs with different proportions of Ni1−xCrx (x = 0.0, 0.1, 0.15, 0.2, 0.25, 0.3) was established via standard characterization techniques. These techniques proved the formation of disorder Cr2Ni3 alloy and carbon for all the formulations. The as-synthesized composite NFs exhibited a higher catalytic performance for AB dehydrogenation than that of Cr-free Ni–CNFs. Among all the formulations, the sample composed of 15% Cr shows the best catalytic performance, as more H2 was released in less time. Furthermore, it shows good stability, as it is recyclable with little decline in the catalytic activity after six cycles. It also demonstrates the activation energy, entropy (ΔS), and enthalpy (ΔH) with 37.6 kJ/mole, 0.094 kJ/mole, and 35.03 kJ/mole, respectively. Accordingly, the introduced catalyst has a lower price with higher performance encouraging a practical sustainable H2 energy application from the chemical hydrogen storage materials.

One step synthesis of silane-capped copper clusters as a sensitive optical probe and efficient catalyst for reversible color switching

RSC Advances ◽  
2016 ◽  
Vol 6 (45) ◽  
pp. 38897-38905 ◽  
Author(s):  
Shaochen Zhou ◽  
Yingxuan Li ◽  
Fu Wang ◽  
Chuanyi Wang
Keyword(s):  
Methylene Blue ◽  
Redox Reactions ◽  
Optical Probe ◽  
Switching System ◽  
Efficient Catalyst ◽  
Copper Clusters ◽  
Highly Efficient ◽  
One Step ◽  
Color Switching

Luminescent silane-functionalized copper clusters are developed as a highly efficient catalyst to build up a recyclable and photoreversible color switching system based on the redox reactions of methylene blue.

One-pot synthesis of bi-metallic PdRu tripods as an efficient catalyst for electrocatalytic nitrogen reduction to ammonia

2019 ◽  
Vol 7 (2) ◽  
pp. 801-805 ◽  
Author(s):  
Hongjing Wang ◽  
Yinghao Li ◽  
Chunjie Li ◽  
Kai Deng ◽  
Ziqiang Wang ◽  
...  
Keyword(s):  
Synthetic Method ◽  
One Pot ◽  
Efficient Catalyst ◽  
Nitrogen Reduction ◽  
One Pot Synthesis ◽  
One Step

A very simple one-step synthetic method is developed for fabrication of PdRu tripods for electrochemical nitrogen reduction to ammonia.

Facile single step synthesis of an acid functionalized nano porous carbon composite as an efficient catalyst for tertiary butylation of phenol

RSC Advances ◽  
2014 ◽  
Vol 4 (100) ◽  
pp. 57223-57226 ◽  
Author(s):  
Devaki Nandan ◽  
Nagabhatla Viswanadham
Keyword(s):  
Porous Carbon ◽  
Coal Tar ◽  
Carbon Composite ◽  
Single Step ◽  
Efficient Catalyst ◽  
Petroleum Waste ◽  
One Step ◽  
Produce Acid ◽  
Waste Coal

A simple, one step, simultaneous carbonization and sulfonation of petroleum waste coal tar was conducted to produce acid functionalized nano porous carbon and applied for tertiary butylation of phenol.

Tunable ternary (P, S, N)-doped graphene as an efficient electrocatalyst for oxygen reduction reaction in an alkaline medium

RSC Advances ◽  
2015 ◽  
Vol 5 (105) ◽  
pp. 86746-86753 ◽  
Author(s):  
Yishu Wang ◽  
Bowen Zhang ◽  
Minghui Xu ◽  
Xingquan He
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Low Cost ◽  
Reduction Reaction ◽  
Efficient Catalyst ◽  
Pyrolysis Method ◽  
High Efficient ◽  
Doped Graphene ◽  
One Step ◽  
Nitrogen Phosphorus

A novel nitrogen, phosphorus and sulfur ternary-doped graphene (PSNG) was synthesized by a one-step pyrolysis method, which was used as a low-cost and high-efficient catalyst for the oxygen reduction reaction.

One‐Step Synthesis of MoS 2 Nanosheet Arrays on 3D Carbon Fiber Felts as a Highly Efficient Catalyst for the Hydrogen Evolution Reaction

2019 ◽  
Vol 7 (6) ◽  
pp. 1900052 ◽  
Author(s):  
Xiaobei Zang ◽  
Chaofan Zhou ◽  
Qingguo Shao ◽  
Sirong Yu ◽  
Yijiang Qin ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Efficient Catalyst ◽  
Highly Efficient ◽  
Nanosheet Arrays ◽  
One Step

One-step fabrication of bimetallic CuCoOS as an efficient catalyst for Cr(VI) reduction

2021 ◽  
Author(s):  
Xue-Qing Li ◽  
Dongyun Chen ◽  
Najun Li ◽  
Qingfeng Xu ◽  
Hua Li ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Efficient Catalyst ◽  
One Step

In the field of catalysis, the development of efficient and economical catalysts for the reduction of heavy metals such as Cr(VI) remains challenging. In this study, a series of CuCoOS...

One-step fabrication of bimetallic PtNi mesoporous nanospheres as an efficient catalyst for the oxygen reduction reaction

Nanoscale ◽  
2018 ◽  
Vol 10 (34) ◽  
pp. 16087-16093 ◽  
Author(s):  
Hongjing Wang ◽  
Hongjie Yu ◽  
Shuli Yin ◽  
Yinghao Li ◽  
Hairong Xue ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Active Catalyst ◽  
Reduction Reaction ◽  
Step Method ◽  
Efficient Catalyst ◽  
One Step

PtNi mesoporous nanospheres are fabricated by a one-step method in aqueous solution and used as an active catalyst for the oxygen reduction reaction.

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