Solid acid catalyst
Synthesis of Dihydroquinoline Derivatives Using Biodegradable Cellulose Sulfuric Acid as a Solid Acid Catalyst
... sulfuric acid has emerged as a solid acid catalyst for acid catalyzed reactions, such as synthesis of a-aminonitriles [17], imidazoazines [18], quinolines [19], xanthenes [20], 3,4- ...
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Synthesis of 1,2-Disubstituted Benzimidazoles in the Presence of SBA-Pr-SO3H as a Nano Solid Acid Catalyst
... the solid acid catalyst protonates the carbonyl group of aromatic aldehyde (2) which then condense with 1,2-phenylendiamine (1) to produce dibenzylidene-1,2-phenylenediamine ...of catalyst, ...
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MONTMORILLONITE: A MILD AND EFFICIENT RECYCLABLE SOLID ACID CATALYST FOR DETRITYLATION OF TRITYL TETRAZOLE IN SARTAN MOLECULES
... sulfuric acid [14] and silica gel supported ceric ammonium nitrate [15] for ...and catalyst supported has received considerable attention recently [16,17] ...heterogeneous solid acid ...
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Synthesis, Characterization of Highly Efficient SO 42 / CeO 2–ZrO2 Solid Acid Catalyst and Activity Studies of 2, 4, 5-triaryl imidazoles
... chlorosulfonic acid is used as sulphating ...this solid acid catalyst has been studied by FT-IR, XRD, and ...Synthesized solid acid catalyst is employ for preparation of ...
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Direct production of biodiesel from high-acid value Jatrophaoil with solid acid catalyst derived from lignin
... the catalyst possessed high catalytic activity in the esterification reaction, we therefore used crude Jatropha oil with high-acid value ...the solid acid catalyst achieved a high ...
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Catalyst Activity of Solid Acid Catalyst Derived From Agricultural Biomass for Biodiesel Production From Waste Cooking Oil
... sulfonic acid functional group attached to ...for solid acid catalyst synthesis provides advantages in the reduction and recycling of waste biomass as well as an environmental-friendly ...
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A magnetically separable SO₄/Fe-Al-TiO₂ solid acid catalyst for biodiesel production from waste cooking oil
... Solid acid catalyst design has received considerable attention for biodiesel production from cheap and non-food ...because solid acid catalysts can simultaneously perform esterification ...
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Sulfonated Carbon Material as An Efficient Solid Acid Catalyst for Biodiesel Synthesis via Oleic Acid Esterification Under High Voltage Conditions
... heterogeneous solid acid catalyst for the synthesis of biodiesel via esterification of oleic acid with methanol under high voltage ...reusable catalyst, environmental benignity, ...
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Silica Sulfuric Acid as a Efficient and Recyclable Solid Acid Catalyst for the One-Pot Synthesis of 2,4,6-Triaylpyridines Under Solvent Free Conditions
... of solid acid catalyst for the heterocyclic compounds, we found that H 2 SO 4 -SiO 2 an inexpensive and recyclable catalyst, can efficiently catalyze a one-pot synthesis of 2,4,6- ...
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Silica Boron Sulfonic Acid as Heterogeneous and Highly Efficient Solid Acid Catalyst For the Preparation of Hantzsch 1,4-dihydropyridines Under Solvent-Free
... reusable solid acid catalyst can act as a Lewis acid and Brønsted acid catalyst, which this behavior can be help to the better effect ...sulfonic acid (BSA) supported on ...
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Sulfonic acid-functionalized polyallylamine (sevelamer) as an efficient reusable strong solid acid catalyst for the synthesis of xanthenes derivatives
... sulfonic acid (S‑SO 3 H) has been prepared from the reaction of sevelamer with chlorosulfonic acid and characterized using FT‑IR spectroscopy, scanning electronmicroscopy (SEM) and ther‑ mogravimetric ...
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Acid Activated Palygorskite: An Efficient Solid Acid Catalyst for Acetylation Reactions – A Comparative Study
... and acid activated sample is listed in Table ...During acid-activation cation exchange capacity first increases and reaches a maximum and then ...of acid treatment crystal structure starts collapsing ...
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Preparation, Characterization and Catalytic Activity of Alkyl Benzene Sulfonic Acid Carbon Based Acid Catalyst
... sulfonic acid as the materials, a novel carbon-based solid acid catalyst is synthesized using hydrothermal ...This catalyst exhibits much higher catalytic activity in the reaction of ...
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Biodiesel production from used cooking oil using a novel surface functionalised TiO2 nano-catalyst
... the solid acid catalyst surface resulting in high catalytic activity and selectivity toward glycerol in the esterification of FFAs ...sulfonic acid sites loading on the surface of ...
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Facile Strategy for Surface Functionalization of Corn Cob to Biocarbon and Its Catalytic Performance on Banana Peel Starch Hydrolysis
... homogeneous catalyst and enzymatic ...based solid acid catalyst could be hydrolysed pure crystalline cellulose and natural lignocellulosic ...
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Phospho Sulfonic Acid Catalyzed Synthesis of Benzimidazole, Benzoxazole and Quinoxaline Derivatives under Green Solvent at Ambient Temperature
... sulfonic acid (PSA) synthesized as an environmentally safe and efficient solid acid catalyst, and it used for the synthesis of several 2-disubstituted benzimidazoles, 2-substituted ...
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A GREEN AND EFFICIENT ROUTE TO SYNTHESIS OF DIACETALS WITH PENTAERYTHRITOL USING SOLID ACID CATALYSTS
... camphorsulphonic acid [22], iodine [23], formic acid [24] and a series of cationic diphosphine Lewis acidic complexes of Pt(II), Pd(II), and Rh(III) etc ...of solid acid catalyst ...
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Transesterification of croton megalocarpus oil over tungsten trioxide loaded on silica mesoporous-macroparticles
... sustainable solid acid catalysts for biodiesel ...that solid acid catalysts have strong potential to replace liquid acid ...ideal solid acid catalyst for ...
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β-Cyclodextrain sulfonic acid as a biodegradable solid catalyst in benzoxanthenes synthesis
... Abstract- A new and efficient synthesis of benzoxanthene drivatives from the three-component condensation reaction ofaryl aldehydes and β-naphthol under solvent-free conditions in the presence of β- cyclodextrin sulfonic ...
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Synthesis of Solid Base and Acid Catalysts from Agricultural Residues For Use in Fatty Acid Methyl Esters (FAMEs) Production.
... polymer chains should be low, but not too low so that the matrix loses its structural integrity. In the use of these catalysts, swelling is through soaking in typically ethanol and swelling time is also now a parameter, ...
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