scholarly journals Rational Design of a Polyoxometalate Intercalated Layered Double Hydroxide: Highly Efficient Catalytic Epoxidation of Allylic Alcohols under Mild and Solvent-Free Conditions

2016 ◽  
Vol 23 (5) ◽  
pp. 1069-1077 ◽  
Author(s):  
Tengfei Li ◽  
Zelin Wang ◽  
Wei Chen ◽  
Haralampos N. Miras ◽  
Yu-Fei Song
Keyword(s):  
Layered Double Hydroxide ◽  
Rational Design ◽  
Solvent Free ◽  
Allylic Alcohols ◽  
Highly Efficient ◽  
Catalytic Epoxidation ◽  
Solvent Free Conditions ◽  
Double Hydroxide

Defect-rich Ni–Ti layered double hydroxide as a highly efficient support for Au nanoparticles in base-free and solvent-free selective oxidation of benzyl alcohol

2018 ◽  
Vol 47 (15) ◽  
pp. 5226-5235 ◽  
Author(s):  
Mengran Liu ◽  
Guoli Fan ◽  
Jiaying Yu ◽  
Lan Yang ◽  
Feng Li
Keyword(s):  
Benzyl Alcohol ◽  
Selective Oxidation ◽  
Layered Double Hydroxide ◽  
Au Nanoparticles ◽  
Solvent Free ◽  
Highly Efficient ◽  
Oxidation Of Benzyl Alcohol ◽  
Enhanced Activity ◽  
Double Hydroxide

Defect-rich Ni–Ti layered double hydroxide supported Au nanoparticles exhibited greatly enhanced activity in the oxidation of benzyl alcohol.

A highly efficient and green approach for the synthesis of pyrimido[4,5-b]quinolines using N,N-diethyl-N-sulfoethanaminium chloride

2021 ◽  
Vol 76 (2) ◽  
pp. 85-90
Author(s):  
Abdolkarim Zare ◽  
Manije Dianat
Keyword(s):  
Reaction Times ◽  
Solvent Free ◽  
One Pot ◽  
Catalyst Amount ◽  
Green Protocol ◽  
Highly Efficient ◽  
Green Approach ◽  
Solvent Free Conditions ◽  
The One ◽  
High Yields

Abstract A highly efficient and green protocol for the synthesis of pyrimido[4,5-b]quinolines has been described. The one-pot multicomponent reaction of dimedone with arylaldehydes and 6-amino-1,3-dimethyluracil in the presence of N,N-diethyl-N-sulfoethanaminium chloride ([Et3N–SO3H][Cl]) as an ionic liquid (IL) catalyst under solvent-free conditions afforded the mentioned compounds in high yields and short reaction times. Our protocol is superior to many of the reported protocols in terms of two or more of these factors: the reaction times, yields, conditions (solvent-free versus usage of organic solvents), temperature and catalyst amount.

scholarly journals Efficient Solvent-free Oxidation of Benzylic and Aromatic Allylic Alcohols and Biaryl Acyloins by Manganese Dioxide and Barium Manganate

1999 ◽  
Vol 23 (3) ◽  
pp. 236-237
Author(s):  
Habib Firouzabadi ◽  
Babak Karimi ◽  
Mohammad Abbassi
Keyword(s):  
Manganese Dioxide ◽  
Solvent Free ◽  
Allylic Alcohols ◽  
Solvent Free Conditions ◽  
Free Oxidation

Active manganese dioxide and commercially available barium manganate are used for the efficient oxidation of benzylic and aromatic allylic alcohols and biaryl acyloins under solvent-free conditions.

scholarly journals Solvent-free synthesis of symmetric methylene diesters via direct reaction of aromatic carboxylates with 1,n-dihaloalkanes

RSC Advances ◽  
2021 ◽  
Vol 11 (46) ◽  
pp. 28711-28715
Author(s):  
Lin Bai ◽  
Shenglong Ding ◽  
Xiaofang Ma
Keyword(s):  
Solvent Free ◽  
Direct Reaction ◽  
Highly Efficient ◽  
Solvent Free Conditions ◽  
Aromatic Carboxylates ◽  
Solvent Free Synthesis

This work provides a highly efficient and feasible strategy for the synthesis of symmetric methylene diesters, involving the direct diesterification of various carboxylates with 1,n-dihaloalkanes under solvent-free conditions.

scholarly journals Engineering single-atomic ruthenium catalytic sites on defective nickel-iron layered double hydroxide for overall water splitting

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Panlong Zhai ◽  
Mingyue Xia ◽  
Yunzhen Wu ◽  
Guanghui Zhang ◽  
Junfeng Gao ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Layered Double Hydroxide ◽  
Hydrogen Evolution Reaction ◽  
Active Sites ◽  
Density Functional ◽  
Rational Design ◽  
Single Atom ◽  
Nickel Iron ◽  
Double Hydroxide

AbstractRational design of single atom catalyst is critical for efficient sustainable energy conversion. However, the atomic-level control of active sites is essential for electrocatalytic materials in alkaline electrolyte. Moreover, well-defined surface structures lead to in-depth understanding of catalytic mechanisms. Herein, we report a single-atomic-site ruthenium stabilized on defective nickel-iron layered double hydroxide nanosheets (Ru1/D-NiFe LDH). Under precise regulation of local coordination environments of catalytically active sites and the existence of the defects, Ru1/D-NiFe LDH delivers an ultralow overpotential of 18 mV at 10 mA cm−2 for hydrogen evolution reaction, surpassing the commercial Pt/C catalyst. Density functional theory calculations reveal that Ru1/D-NiFe LDH optimizes the adsorption energies of intermediates for hydrogen evolution reaction and promotes the O–O coupling at a Ru–O active site for oxygen evolution reaction. The Ru1/D-NiFe LDH as an ideal model reveals superior water splitting performance with potential for the development of promising water-alkali electrocatalysts.

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