Activities and stabilities of heterogeneous catalysts in selective liquid phase oxidations: recent developments

2001 ◽  
Vol 212 (1-2) ◽  
pp. 175-187 ◽  
Author(s):  
I.W.C.E. Arends ◽  
R.A. Sheldon
Keyword(s):  
Liquid Phase ◽  
Heterogeneous Catalysts ◽  
Recent Developments

scholarly journals Solid acids and their use as environmentally friendly catalysts in organic synthesis

2000 ◽  
Vol 72 (7) ◽  
pp. 1313-1319 ◽  
Author(s):  
Karen Wilson ◽  
James H. Clark
Keyword(s):  
Liquid Phase ◽  
Organic Synthesis ◽  
Heterogeneous Catalysts ◽  
Solid Acids ◽  
Porous Solids ◽  
Materials Chemistry ◽  
Ordered Mesoporous ◽  
Mineral Acids ◽  
Recent Developments ◽  
Alternative Processes

Tightening environmental legislation is driving the fine and speciality chemicals industries to consider alternative processes that avoid the use of conventional mineral acids. The use of heterogeneous catalysts in these processes would vastly simplify catalyst removal, minimizing the amount of waste formed. However, diffusion limitation of liquids within porous solids dictates that effective solid acids for liquid-phase reactions require the use of mesoporous materials <20_100Å. Recent developments in materials chemistry has led to the discovery of a family of ordered mesoporous silicas which opens up new possibilities for preparing solid-acid catalysts for liquid-phase reactions. This review concentrates on recent developments in the synthesis of new mesoporous solid acids for liquid-phase organic synthesis.

Heterogeneous System in Organic Synthesis: A Review

2020 ◽  
Vol 17 (6) ◽  
pp. 740-753
Author(s):  
Bishwajit Changmai ◽  
Gunindra Pathak ◽  
Jasha Momo H. Anal ◽  
Lalthazuala Rokhum
Keyword(s):  
Organic Synthesis ◽  
Heterogeneous System ◽  
Heterogeneous Catalysts ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Environmentally Friendly ◽  
Henry Reaction ◽  
Phase Synthesis ◽  
Recent Developments ◽  
Recovery And Reuse

Due to its inherent advantages such as easy recovery and reuse of the catalysts/ reagents, and environmentally friendly nature, the heterogeneous system has gain popularity in the realm of organic synthesis. In recent years, several chemically or biologically potent molecules are achieved through heterogeneous synthesis strategies. By recalling some of the classical fundamentals of the heterogeneous system in important organic synthesis, this mini-review outlines the recent developments in the applications heterogeneous catalysts and reagents; particularly in the solid phase synthesis, esterification and transesterification reactions to produce biodiesel, and Henry reaction.

scholarly journals Solvent inhibition in the liquid-phase catalytic oxidation of 1,4-butanediol: understanding the catalyst behaviour from NMR relaxation time measurements

2016 ◽  
Vol 6 (21) ◽  
pp. 7896-7901 ◽  
Author(s):  
Carmine D'Agostino ◽  
Mark R. Feaviour ◽  
Gemma L. Brett ◽  
Jonathan Mitchell ◽  
Andrew P. E. York ◽  
...  
Keyword(s):  
Relaxation Time ◽  
Liquid Phase ◽  
Catalytic Oxidation ◽  
Heterogeneous Catalysts ◽  
Nmr Relaxation ◽  
Nmr Relaxation Time

Solvent inhibition over surfaces affects behaviour and performances of heterogeneous catalysts.

Questions, Controversies and Frustration in Quantum Antiferromagnetism

1991 ◽  
Vol 05 (01n02) ◽  
pp. 171-189 ◽  
Author(s):  
P. Chandra ◽  
P. Coleman ◽  
I. Ritchey
Keyword(s):  
Liquid Phase ◽  
Spin Liquid ◽  
Nematic State ◽  
Recent Developments

The search for a gapless spin liquid phase has raised many issues in quantum antiferromagnetism. Here we review recent developments in this field, and in particular address questions and controversies surrounding a proposed “spin nematic” state.

MOFs as Heterogeneous Catalysts in Liquid Phase Reactions

2018 ◽  
pp. 379-398 ◽  
Author(s):  
Maksym Opanasenko ◽  
Petr Nachtigall ◽  
Jiří Čejka
Keyword(s):  
Liquid Phase ◽  
Heterogeneous Catalysts

Recent developments in the synthesis of polysubstituted pyridines via multicomponent reactions using nanocatalysts

2021 ◽  
Author(s):  
Fatemeh Majidi Arlan ◽  
Ahmad Poursattar Marjani ◽  
Ramin Javahershenas ◽  
Jabbar Khalafy
Keyword(s):  
Multicomponent Reactions ◽  
Heterogeneous Catalysts ◽  
Pyridine Derivatives ◽  
Active Metal ◽  
Recent Developments

This review describes the evolution and application of active metal-based and heterometallic NPs as efficient heterogeneous catalysts for the synthesis of pyridine derivatives by multicomponent reactions in the last decade (2010–2020).

scholarly journals Recent advances on the utilization of layered double hydroxides (LDHs) and related heterogeneous catalysts in a lignocellulosic-feedstock biorefinery scheme

2017 ◽  
Vol 19 (22) ◽  
pp. 5269-5302 ◽  
Author(s):  
Willinton Y. Hernández ◽  
Jeroen Lauwaert ◽  
Pascal Van Der Voort ◽  
An Verberckmoes
Keyword(s):  
Liquid Phase ◽  
Layered Double Hydroxides ◽  
Heterogeneous Catalysts ◽  
Recent Advances ◽  
Lignocellulosic Feedstock ◽  
Different Types ◽  
Double Hydroxides

Layered double hydroxides (LDHs) and derived materials have been widely used as heterogeneous catalysts for different types of reactions either in gas or in liquid phase.

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