4.5 Article

Evaluation of the Activity of Potassium Dodecatungstate Salts in Alcohol Oxidation Reactions: Cobalt(II), Cobalt(III), or Silicon(IV) as the Heteroatom

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Engineering, Chemical

Impacts of Sn(II) doping on the Keggin heteropolyacid-catalyzed etherification of glycerol with tert-butyl alcohol

Marcio Jose da Silva et al.

Summary: Phosphomolybdic acid salts were synthesized and evaluated as catalysts for the etherification reactions of glycerol with tert-butyl alcohol, with Sn(II) cations exchanged for their protons. Among the tested Sn(II) heteropoly salts, Sn3PMo12O40 showed the highest activity and selectivity towards glyceryl ethers, attributed to its greater Lewis acidity strength. Economic analysis indicated the viability of the process with a return on investment (ROI) of 30.7% for an annual production capacity of 30,000 metric tons.

CHEMICAL ENGINEERING SCIENCE (2022)

Article Chemistry, Multidisciplinary

How the Cobalt Position in the Keggin Anion Impacts the Activity of Tungstate Catalysts in the Furfural Acetalization with Alkyl Alcohols

Marcio Jose da Silva et al.

Summary: Keggin heteropolyacids (HPAs) are versatile catalysts with adjustable properties through structural modification. This study evaluated the effects of structure modification on the catalytic performance by synthesizing a series of cobalt-polyoxometalates and found that K6CoW12O40 salt exhibited the highest activity and selectivity.

CHEMISTRYSELECT (2022)

Article Chemistry, Physical

Esterification of levulinic acid over Sn(II) exchanged Keggin heteropolyacid salts: An efficient route to obtain bioaditives

Marcio Jose Da Silva et al.

Summary: This paper describes a process to convert biomass derivatives into bioadditives using solid Sn1.5PW12O40 catalysts, which exhibit high activity and selectivity for the main reaction products. The impacts of the main reaction parameters were investigated, highlighting the use of renewable raw materials and efficient, recyclable catalysts as the main positive features of this process.

MOLECULAR CATALYSIS (2021)

Article Chemistry, Physical

Can Bronsted acids catalyze the epoxidation of allylic alcohols with H2O2? With a little help from the proton, the H3PMo12O40 acid did it and well

Castelo Bandane Vilanculo et al.

Summary: This study investigated the catalytic activity of different acids in epoxidation reactions of terpene alcohols, with H3PMo12O40 showing the highest activity and selectivity towards nerol epoxide. The results suggest that Molybdenum and protons in H3PMo12O40 are the main active sites in this reaction.

MOLECULAR CATALYSIS (2021)

Article Chemistry, Multidisciplinary

Na4PMo11VO40-catalyzed one-pot oxidative esterification of benzaldehyde with hydrogen peroxide

Castelo Bandane Vilanculo et al.

Summary: The study evaluated the activity of sodium salts of vanadium-doped phosphomolybdic acid in the oxidative esterification reaction of benzaldehyde with hydrogen peroxide in alkyl alcohol solutions. The catalyst Na4PMo11VO40 showed the highest activity and selectivity, regardless of the type of alcohol used. The reaction selectivity was influenced by the carbon chain length of the alcohol and steric hindrance on the hydroxyl group.

RSC ADVANCES (2021)

Article Chemistry, Multidisciplinary

Vanadium-doped sodium phosphomolybdate salts as catalysts in the terpene alcohols oxidation with hydrogen peroxide

Castelo Bandane Vilanculo et al.

Summary: This study investigated the catalytic activity of Keggin-type heteropolyanions in green oxidation routes of terpene alcohols with hydrogen peroxide, with Na4PMo11VO40 being the most active and selective catalyst toward epoxides. The focus was on correlating the composition and properties of vanadium-doped phosphomolybdic catalysts with their catalytic activity.

RSC ADVANCES (2021)

Article Chemistry, Physical

Transition Metal-Substituted Potassium Silicotungstate Salts as Catalysts for Oxidation of Terpene Alcohols with Hydrogen Peroxide

Marcio Jose da Silva et al.

Summary: The catalytic activity of transition metal-substituted potassium silicotungstate salts on the oxidation reactions of terpene alcohols was investigated in this work. Among the salts studied, K5SiFeW11O39 showed the highest activity and selectivity, attributed to its highest Lewis acidity.

CATALYSIS LETTERS (2021)

Article Chemistry, Multidisciplinary

Monoterpenes etherification reactions with alkyl alcohols over cesium partially exchanged Keggin heteropoly salts: effects of catalyst composition

Marcio Jose da Silva et al.

Summary: The study found that phosphotungstate is the most effective Keggin heteropolyacid catalyst, and Cs2.5H0.5PW12O40 salt is the most active and selective catalyst. Investigation on the effects of reaction parameters such as temperature, time, catalyst load, etc. showed that the simultaneous presence of cesium ions and protons plays an important role in the reaction, with an optimal molar ratio of 2.5-0.5. The Cs2.5H0.5PW12O40 salt can be efficiently recovered and reused without losing catalytic activity.

CHEMICAL PAPERS (2021)

Article Engineering, Chemical

Sn(II)-Exchanged Keggin Silicotungstic Acid-Catalyzed Etherification of Glycerol and Ethylene Glycol with Alkyl Alcohols

Marcio Jose da Silva et al.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2020)

Article Chemistry, Physical

Lewis acid metal cations exchanged heteropoly salts as catalysts in β-pinene etherification

Marcio J. da Silva et al.

REACTION KINETICS MECHANISMS AND CATALYSIS (2020)

Article Chemistry, Physical

Metal silicotungstate salts as catalysts in furfural oxidation reactions with hydrogen peroxide

Marcio J. da Silva et al.

MOLECULAR CATALYSIS (2020)

Article Green & Sustainable Science & Technology

Renewable chemical feedstock supply network design: The case of terpenes

Naoum Tsolakis et al.

JOURNAL OF CLEANER PRODUCTION (2019)

Review Chemistry, Physical

Catalytic Oxidation Processes for the Upgrading of Terpenes: State-of-the-Art and Future Trends

Audrey Denicourt-Nowicki et al.

CATALYSTS (2019)

Article Chemistry, Multidisciplinary

K5PW11NiO39-catalyzed oxidation of benzyl alcohol with hydrogen peroxide

Nelson C. Coronel et al.

CHEMISTRYSELECT (2019)

Article Chemistry, Physical

Monolacunary K8SiW11O39-Catalyzed Terpenic Alcohols Oxidation with Hydrogen Peroxide

Marcio Jose da Silva et al.

CATALYSIS LETTERS (2018)

Review Chemistry, Inorganic & Nuclear

Lacunar Keggin Heteropolyacid Salts: Soluble, Solid and Solid-Supported Catalysts

Nelson Contreras Coronel et al.

JOURNAL OF CLUSTER SCIENCE (2018)

Article Chemistry, Physical

Cyclohexene to adipic acid synthesis using heterogeneous polyoxometalate catalysts

Joao Carlos S. Soares et al.

MOLECULAR CATALYSIS (2018)

Article Chemistry, Multidisciplinary

Recent advances of polyoxometalate-catalyzed selective oxidation based on structural classification

Qiongyao Chen et al.

ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY (2018)

Article Chemistry, Physical

A Highly Selective Na2WO4-Catalyzed Oxidation of Terpenic Alcohols by Hydrogen Peroxide

Luna Andrade Silva Viana et al.

CATALYSIS LETTERS (2018)

Article Chemistry, Physical

Catalysis of vegetable oil transesterification by Sn(II)-exchanged Keggin heteropolyacids: bifunctional solid acid catalysts

Marcio Jose Da Silva et al.

REACTION KINETICS MECHANISMS AND CATALYSIS (2017)

Review Chemistry, Physical

Keggin-type lacunary and transition metal substituted polyoxometalates as heterogeneous catalysts: A recent progress

Anjali Patel et al.

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING (2016)

Article Chemistry, Physical

Heteropolycompounds as catalysts for biomass product transformations

Laura M. Sanchez et al.

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING (2016)

Article Chemistry, Physical

Fe4(SiW12O40)3-catalyzed glycerol acetylation: Synthesis of bioadditives by using highly active Lewis acid catalyst

Marcio Jose Da Silva et al.

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL (2016)

Review Chemistry, Multidisciplinary

Recent Advances in Polyoxometalate-Catalyzed Reactions

Sa-Sa Wang et al.

CHEMICAL REVIEWS (2015)

Review Chemistry, Inorganic & Nuclear

Environmentally benign polyoxometalate materials

Solomon Omwoma et al.

COORDINATION CHEMISTRY REVIEWS (2015)

Article Chemistry, Inorganic & Nuclear

Identification and characterisation of stable phases of silicotungstic acid, H4SiW12O40•nH2O

F. J. Berry et al.

POLYHEDRON (2014)

Article Chemistry, Multidisciplinary

A Highly Active Protonated Tetranuclear Peroxotungstate for Oxidation with Hydrogen Peroxide

Ryo Ishimoto et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2012)

Article Chemistry, Physical

Aqueous-Phase Hydrogenolysis of Glycerol to 1,3-propanediol Over Pt-H4SiW12O40/SiO2

Shanhui Zhu et al.

CATALYSIS LETTERS (2012)

Article Materials Science, Multidisciplinary

The effect of annealing temperature on the structure and optical properties of sol-gel derived nanocrystalline cobalt aluminate spinel

S. Kurajica et al.

MATERIALS CHEMISTRY AND PHYSICS (2012)

Article Chemistry, Physical

Tin exchanged heteropoly tungstate: An efficient catalyst for benzylation of arenes with benzyl alcohol

Ch. Ramesh Kumar et al.

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL (2011)

Article Chemistry, Physical

Dehydration of glycerol in gas phase using heteropolyacid catalysts as active compounds

Hanan Atia et al.

JOURNAL OF CATALYSIS (2008)

Article Chemistry, Inorganic & Nuclear

Tungstocobaltate-pillared layered double hydroxides: Preparation, characterization, magnetic and catalytic properties

Xiaocui Wei et al.

JOURNAL OF SOLID STATE CHEMISTRY (2008)

Article Chemistry, Multidisciplinary

Olefin epoxidation with hydrogen peroxide catalyzed by lacunary polyoxometalate [gamma-SiW10O34(H2O)(2)](4-)

Keigo Kamata et al.

CHEMISTRY-A EUROPEAN JOURNAL (2007)

Article Chemistry, Applied

Catalytic conversion of terpenes into fine chemicals

JLF Monteiro et al.

TOPICS IN CATALYSIS (2004)

Article Chemistry, Physical

Supported Keggin type heteropolycompounds for ecofriendly reactions

LR Pizzio et al.

APPLIED CATALYSIS A-GENERAL (2003)

Review Chemistry, Physical

Acid catalysis by heteropoly acids

MN Timofeeva

APPLIED CATALYSIS A-GENERAL (2003)

Article Chemistry, Multidisciplinary

Keggin ions as UV-switchable reducing agents in the synthesis of Au core-Ag shell nanoparticles

S Mandal et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2003)

Article Chemistry, Physical

Oxidation of monoterpenes with hydrogen peroxide catalysed by Keggin-type tungstoborates

ICMS Santos et al.

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL (2003)