搜索结果: 1-12 共查到“Heterogeneous catalyst”相关记录12条 . 查询时间(0.072 秒)
Rosin-based porous heterogeneous catalyst functionalized with hydroxyl groups and triazole groups for CO2?chemical conversion under atmospheric pressure condition
Rosin-based porous polymers CO2 Cyclic carbonates Atmospheric pressure
2023/12/15
Development of efficient, green and recyclable?heterogeneous catalysts?for the chemical conversion of CO2?into cyclic carbonates with excellent yields under atmospheric pressure condition is still a v...
SiO2-Cu2O：An efficient and recyclable heterogeneous catalyst for N-benzylation of primary and secondary amines
Silica supported copper(I) oxide Benzylation Substituted amine Recyclability Heterogeneous catalysis
2014/3/9
A mild, effective, and selective procedure is reported for the mono N-benzylation and N,N-dibenzylation of primary amines as well as mono N-benzylation of secondary amines using silica-supported coppe...
Rice husk ash supported FeCl2·2H2O：A mild and highly efficient heterogeneous catalyst for the synthesis of polysubstituted quinolines by Friedländer heteroannulation（图）
Rice husk ash Supported FeCl2·2H2O, Quinolines 2-Amino benzophenone Solvent-free Friedlä nder heteoannulation
2013/12/5
Rice husk ash was used as a new, green, and cheap adsorbent for FeCl3. Characterization of the obtained reagent showed that rice husk ash supported FeCl2·2H2O was formed. This reagent is efficient at ...
Tetrabutylammonium hexatungstate [TBA]2[W6O19]: Novel and reusable heterogeneous catalyst for rapid solvent-free synthesis of polyhydroquinolines via unsymmetrical Hantzsch reaction（图）
Heterogeneous catalysis Polyhydroquinolines Tetrabutylammonium hexatungstate
2013/9/26
A novel, efficient, and environmentally friendly method for the synthesis of polyhydroquinoline derivatives by a one-pot, four-component unsymmetrical Hantzsch condensation of dimedone, aldehydes, eth...
A Rapid and Green Method for Solvent-Free Synthesis of 1,8-Dioxodecahydroacridines Using Tetrabutylammonium Hexatungstate as a Reusable Heterogeneous Catalyst（图）
1,8-dioxodecahydroacridine solvent-free condition tetrabutylammonium hexatungstate
2013/10/4
Tetrabutylammonium hexatungstate, [TBA]2[W6O19], has been used as an efficient, inexpensive, and recyclable green catalyst for the one-pot three-component synthesis of 1,8-dioxodecahydroacridines by t...
SiO2-NaHSO4 as an Efficient Reusable Heterogeneous Catalyst for the One-Pot Three-Component Synthesis of Octahydro-quinazolin-2,5-diones in Water（图）
octahydro-quinazolin-2,5-dione aromatic aldehyde dimedone urea water
2013/10/8
An environmentally benign method for the synthesis of octahydro-quinazolin-2,5-diones by the reaction of aromatic aldehydes,dimedone, and urea in the presence of SiO2-NaHSO4 is reported. SiO2-NaHSO4 a...
Silica Sulfuric Acid: An Efficient Heterogeneous Catalyst for the One-Pot Synthesis of 1,4-Dihydropyridines under Mild and Solvent-Free Conditions（图）
aldehyde ethyl acetoacetate ammonium acetate silica sulfuric acid 1,4-dihydropyridine
2013/10/12
A series of 1,4-dihydropyridines have been prepared by a one-pot condensation of aldehydes, ethyl acetoacetate, and ammonium acetate in the presence of a heterogeneous catalyst silica sulfuric acid at...
微波促进非均相催化生物柴油制备的研究进展（Advances in Synthesis of Biodiesel Catalysts by Heterogeneous Catalyst Promoted by Microwave）
生物柴油 微波 转酯化 非均相催化剂
2010/12/28
从非均相酸和碱催化转酯化反应的角度，综述了微波促进生物柴油制备的国内外研究进展。在微波辅助下非均相催化过程具有反应速率快、节能、环境友好、产物分离简便的优点。非均相催化剂以固体酸或者固体碱催化剂为主，反应在10～30min内完成，转化率与传统加热方式相当或者更高，所采用的固体催化剂具有可重复利用性。
Silica supported polyphosphoric acid (PPA-SiO2): an efficient and reusable heterogeneous catalyst for the one-pot synthesis of a -amino phosphonates
a -Amino phosphonates PPA-SiO2 heterogeneous catalyst
2010/10/19
An efficient green protocol is described for the preparation of a -amino phosphonates, employing a one-pot three-component condensation reaction between aldehydes, amines, and trialkyl phosphites in t...
One-pot synthesis of amidoalkyl naphthols using NaHSO4.SiO2 as an efficient and recyclable heterogeneous catalyst
NaHSO4.SiO2 amidoalkyl naphthol multi-component reaction heterogeneous catalyst amide
2010/4/8
An efficient synthesis of amidoalkyl naphthols using silica supported sodium hydrogen sulphate as heterogeneous catalyst under a thermal solvent-free green procedure is described. This simple protoco...
Decomposition of Tristearin by Ozonolysis over Heterogeneous Catalyst under Moderate Condition
Biodiesel fuel Ozonolysis Tristearin Zeolite catalyst
2009/8/4
Ozonolysis of triacylglycerol was carried out over heterogeneous catalysts. The triacylglycerol was decomposed to some compounds with low boiling points containing hydrocarbons, aldehydes, ketones, f...
Ferric Hydrogen Sulfate as an Efficient Heterogeneous Catalyst for Environmentally Friendly Greener Synthesis of 1,8-Dioxo-Octahydroxanthenes
Fe(HSO4)3 dimedone heterogeneous catalyst 1,8-dioxo-octahydroxanthene
2010/4/9
Ferric hydrogen sulfate was used as an environmentally friendly heterogeneous acidic catalyst for the greener, 1-pot, 3-component synthesis of 1,8-dioxo-octahydroxanthene via condensation reactions be...