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You searched for: Journal name ACS sustainable chemistry & engineering Remove constraint Journal name: ACS sustainable chemistry & engineering Subject term cyclohexanones Remove constraint Subject term: cyclohexanones
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1. Reusable Deep Eutectic Solvents for Clean ε-Caprolactam Synthesis under Mild Conditions

Author:
Shiqin Sun; Shiwei Liu; Fengli Yu; Jian Zhang; Weiguo Xing; Shitao Yu
Source:
ACS sustainable chemistry & engineering 2022 v.10 no.4 pp. 1675-1688
ISSN:
2168-0485
Subject:
Gibbs free energy; acidity; activation energy; catalysts; catalytic activity; choline chloride; cyclohexanones; green chemistry; hydrogen; hydrogen bonding; solvents; thermal stability
Abstract:
... A deep eutectic solvent (DES) with adjustable Brønsted acidity was prepared easily by choline chloride (ChCl) and trifluoromethanesulfonic acid (TfOH). The obtained DES [ChCl][TfOH]₃ exhibited great stability and excellent catalytic performance in the Beckmann rearrangement reaction as solvent and catalyst. High cyclohexanone oxime (CHO) conversion (100%) and ε-caprolactam selectivity (98.8%) were ...
DOI:
10.1021/acssuschemeng.1c07613

2. Activated Carbon Supported Non-noble Bimetallic Ni-Based Catalysts for Nitrocyclohexane Hydrogenation to Cyclohexanone Oxime under Mild Conditions

Author:
Fangbo Yao; Sihua Liu; Haishuai Cui; Yang Lv; Yuchen Zhang; Pingle Liu; Fang Hao; Wei Xiong; He’an Luo
Source:
ACS sustainable chemistry & engineering 2021 v.9 no.8 pp. 3300-3315
ISSN:
2168-0485
Subject:
activated carbon; adsorption; catalysts; catalytic activity; cyclohexanones; density functional theory; energy; green chemistry; hydrogen; hydrogenation; nickel oxide; temperature
Abstract:
... Activated carbon supported bimetallic Ni-based catalysts were prepared and applied in the selective hydrogenation of nitrocyclohexane (NCH) to cyclohexanone oxime (CHO). The characterization results show that the introduction of the metal promoter can inhibit Ni nanoparticle agglomeration and sintering. Among these bimetallic catalysts, the Cu-Ni/AC catalyst shows the best catalytic performance. T ...
DOI:
10.1021/acssuschemeng.0c09168

3. Dihydrolevoglucosenone (Cyrene), a Biobased Solvent for Liquid–Liquid Extraction Applications

Author:
Thomas Brouwer; Boelo Schuur
Source:
ACS sustainable chemistry & engineering 2020 v.8 no.39 pp. 14807-14817
ISSN:
2168-0485
Subject:
cyclohexanones; energy; energy conservation; green chemistry; liquid-liquid extraction; manufacturing; methyl ethers; oxidation; solvents; toluene
Abstract:
... Dihydrolevoglycosenone, commercially known as Cyrene, is a versatile biobased solvent reported for various applications including being a medium of chemical reactions and membrane manufacture. In this work, application of Cyrene in liquid–liquid extractions has been investigated. Four ternary systems have been assessed at 298.15 K, 323.15 K, and 348.15 K, keeping Cyrene and methylcyclohexane const ...
DOI:
10.1021/acssuschemeng.0c04159

4. High-Efficiency Catalytic Transfer Hydrogenation of Biomass-Based 5-Hydroxymethylfurfural to 2,5-Bis(hydroxymethyl)furan over a Zirconium–Carbon Coordination Catalyst

Author:
Aiyong He; Lei Hu; Yameng Zhang; Yetao Jiang; Xiaoyu Wang; Jiaxing Xu; Zhen Wu
Source:
ACS sustainable chemistry & engineering 2021 v.9 no.46 pp. 15557-15570
ISSN:
2168-0485
Subject:
benzaldehyde; carbon; catalysts; catalytic activity; cyclohexanones; furfural; green chemistry; hydrogenation; hydrophilicity; hydroxymethylfurfural; isopropyl alcohol; levulinic acid; ligands; phenylacetaldehyde; temperature
Abstract:
... Constructing a cheap and high-performance catalyst is very important for the selective synthesis of biomass-based 2,5-bis(hydroxymethyl)furan (BHMF) from 5-hydroxymethylfurfural via the strategy of catalytic transfer hydrogenation (CTH). Herein, we synthesized a neoteric zirconium–carbon coordination catalyst (Zr-HTC) via a simple self-assembly method, in which glucose-derived hydrothermal carbon ...
DOI:
10.1021/acssuschemeng.1c05618

5. High-Yield Production of Deoxygenated Monomers from Kraft Lignin over ZnO-Co/N-CNTs in Water

Author:
Umair Mushtaq; Jaeyong Park; Asim Riaz; Virendra Ranaware; Muhammad Kashif Khan; Deepak Verma; Jaehoon Kim
Source:
ACS sustainable chemistry & engineering 2021 v.9 no.8 pp. 3232-3245
ISSN:
2168-0485
Subject:
activated carbon; aluminum oxide; biofuels; biomass; carbon nanotubes; catalytic activity; cyclohexanones; depolymerization; economic sustainability; green chemistry; hexane; isopropyl alcohol; lignin; lignocellulose; methanol; solvents; value added
Abstract:
... Catalytic conversion of technical lignin to value-added chemicals and fuels is important for realizing economically viable lignocellulosic biomass refineries. The choice of catalysts and solvents is critical for the effective conversion of the technical lignin to chemicals and fuels by the cleavage of the C–C bonds. In this study, catalytic depolymerization and hydrodeoxygenation of Kraft lignin ( ...
DOI:
10.1021/acssuschemeng.0c08664

6. Palladium Nanoparticles Anchored on Sustainable Chitin for Phenol Hydrogenation to Cyclohexanone

Author:
Chuanchuan Zhao; Ziyi Zhang; Yaru Liu; Ningzhao Shang; Hai-Jun Wang; Chun Wang; Yongjun Gao
Source:
ACS sustainable chemistry & engineering 2020 v.8 no.32 pp. 12304-12312
ISSN:
2168-0485
Subject:
biomass; catalysts; catalytic activity; chitin; cyclohexanones; green chemistry; hydrogen; hydrogenation; palladium; phenol; sodium; temperature
Abstract:
... A kind of natural, sustainable, and abundant biomass, chitin, is used as support to load palladium nanoparticles catalyst (Pd–chitin) for the transfer hydrogenation of phenolic compounds to ketones in HCOONa solution. The appropriate reduction temperature in hydrogen atmosphere is a key factor to improve the coordination between oxygen-containing groups and palladium nanoparticle, which prevents p ...
DOI:
10.1021/acssuschemeng.0c04751

7. Detailed Investigation of Compatibility of Hydrothermal Liquefaction Derived Biocrude Oil with Fossil Fuel for Corefining to Drop-in Biofuels through Structural and Compositional Analysis

Author:
Kamaldeep Sharma; Thomas Helmer Pedersen; Saqib Sohail Toor; Yves Schuurman; Lasse Aistrup Rosendahl
Source:
ACS sustainable chemistry & engineering 2020 v.8 no.22 pp. 8111-8123
ISSN:
2168-0485
Subject:
asphaltenes; biofuels; biorefining; carbon; commercialization; cost effectiveness; cyclohexanones; differential scanning calorimetry; distillation; energy; fuel oils; gas chromatography-mass spectrometry; hydrothermal liquefaction; infrastructure; mixing; moieties; nuclear magnetic resonance spectroscopy; oxygen; petroleum; polymers; prediction; pyridines; solubility; solvents; stable isotopes
Abstract:
... Large-scale commercialization of drop-in biofuel technologies requires a deeper understanding of the molecular structure of biocrude oils and their compatibility with fossil crudes in terms of molecular interactions that govern miscibility. For the first time, the compatibility of hydrothermal liquefaction (HTL) derived biocrude obtained from pinewood with straight-run gas oil (SRGO) was comprehen ...
DOI:
10.1021/acssuschemeng.9b06253

8. Mechanistic Insights into the Pathways of Phenol Hydrogenation on Pd Nanostructures

Author:
Govind Porwal; Shelaka Gupta; S. Sreedhala; Joes Elizabeth; Tuhin Suvra Khan; M. Ali Haider; C. P. Vinod
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.20 pp. 17126-17136
ISSN:
2168-0485
Subject:
cyclohexanones; density functional theory; geometry; hydrogen; hydrogenation; nanomaterials; palladium; phenol
Abstract:
... Product selectivity in aqueous phase phenol hydrogenation on well-defined supported Pd nanostructures (spheres, cubes, and octahedra) was studied using defined experiments and density functional theory (DFT) simulations. On Pd spheres and octahedra, the reaction initially showed high selectivity (in the first 3 h, at 363 K and 5 bar H₂ pressure) toward the partially hydrogenated product cyclohexan ...
DOI:
10.1021/acssuschemeng.9b03392

9. Selective Recovery and Recycling of Germanium for the Design of Sustainable Zeolite Catalysts

Author:
Jin Zhang; Qiudi Yue; Michal Mazur; Maksym Opanasenko; Mariya V. Shamzhy; Jiři Čejka
Source:
ACS sustainable chemistry & engineering 2020 v.8 no.22 pp. 8235-8246
ISSN:
2168-0485
Subject:
Fourier transform infrared spectroscopy; Lewis acids; X-ray diffraction; aluminum; catalysts; catalytic activity; cost effectiveness; crystallization; cyclohexanones; epoxidation reactions; germanium; hydrolysis; leaching; microfiltration; models; oxidation; pH; scanning electron microscopy; transmission electron microscopy; zeolites
Abstract:
... Germanosilicate zeolites with extra-large-/multidimensional pore systems have a high potential for catalytic applications. However, their insufficient hydrothermal stability, high cost, and lack of strong acid sites limit their use. This work presents a synthetic approach involving post-synthesis degermanation/germanium recycling and remetalation steps for the cost-efficient preparation of Brønste ...
DOI:
10.1021/acssuschemeng.0c01336

10. Synthesis of Multilevel Structured MoS₂@Cu/Cu₂O@C Visible-Light-Driven Photocatalyst Derived from MOF–Guest Polyhedra for Cyclohexane Oxidation

Author:
Dandan Peng; Ying Zhang; Guang Xu; Ye Tian; Di Ma; Yao Zhang; Ping Qiu
Source:
ACS sustainable chemistry & engineering 2020 v.8 no.17 pp. 6622-6633
ISSN:
2168-0485
Subject:
ammonium compounds; copper; copper nanoparticles; cuprous oxide; cyclohexanones; electrons; hydroxyl radicals; light; molybdenum disulfide; oils; oxidation; photocatalysis; photocatalysts; photoirradiation; surface plasmon resonance
Abstract:
... Selective oxidation of cyclohexane to KA oil (cyclohexanol and cyclohexanone) is one of the most important industrial procedure. In this study, we reported a remarkably enhanced cyclohexane oxidation under visible-light irradiation by a novel MoS₂@Cu/Cu₂O@C composite photocatalyst with multilevel hierarchy, which was prepared by immersing (NH₄)₂MoS₄ guest into Cu-metal–organic framework (MOF) poly ...
DOI:
10.1021/acssuschemeng.9b07212

11. Engineering of Cyclohexanone Monooxygenase for the Enantioselective Synthesis of (S)-Omeprazole

Author:
Yan Zhang; Yin-Qi Wu; Na Xu; Qian Zhao; Hui-Lei Yu; Jian-He Xu
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.7 pp. 7218-7226
ISSN:
2168-0485
Subject:
Acinetobacter calcoaceticus; active sites; biocatalysis; computer simulation; crystal structure; cyclohexanones; enantioselective synthesis; engineering; enzymes; flavin-adenine dinucleotide; green chemistry; models; moieties; oxidants; oxygen; polymerase chain reaction; protein engineering; solubility; substrate specificity
Abstract:
... Enzymatic asymmetric sulfoxidation using molecular oxygen as the oxidant is a promising green chemistry approach to chiral sulfoxide production. Despite the broad substrate spectrum of cyclohexanone monooxygenases (CHMOs), some unnatural substrates with bulky functional groups, such as the pharmaceutically relevant omeprazole sulfide, cannot be effectively accepted by CHMOs. Herein, we describe a ...
DOI:
10.1021/acssuschemeng.9b00224

12. Highly Efficient Alkylation Using Hydrophobic Sulfonic Acid-Functionalized Biochar as a Catalyst for Synthesis of High-Density Biofuels

Author:
Yao Zhong; Peixin Zhang; Xiaomin Zhu; Huan Li; Qiang Deng; Jun Wang; Zheling Zeng; Ji-Jun Zou; Shuguang Deng
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.17 pp. 14973-14981
ISSN:
2168-0485
Subject:
acidity; alkylation; benzenesulfonic acid; biochar; biofuels; byproducts; catalysts; catalytic activity; contact angle; cyclohexanones; diazo compounds; hydrophobicity
Abstract:
... Because H₂O decreases the acidity of sulfonic acid-based catalysts and initiates catalytic side reactions, the catalytic activity and selectivity of these catalysts are often unsatisfactory in many reactions that generate H₂O as a byproduct. Herein, for the first time, hydrophobic acid-functionalized biochar is prepared by a new route based on a two-step diazo grafting method using 4-aminobenzenes ...
DOI:
10.1021/acssuschemeng.9b03190

13. Lipase-Catalyzed Oxidation of Cyclohexanone To Form ε-Caprolactone and Kinetic Modeling

Author:
Yuanyuan Zhang; Yuanyuan Zhao; Weiwei Jiang; Quancai Yao; Zewen Li; Xin Gao; Tao Liu; Fengke Yang; Fanye Wang; Junhong Liu
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.15 pp. 13294-13306
ISSN:
2168-0485
Subject:
acetic acid; carboxylic ester hydrolases; catalytic activity; cyclohexanones; enzymatic reactions; enzyme stability; equations; ethyl acetate; hydrogen peroxide; kinetics; lactones; models; oxidation; peracetic acid; polymerization; urea
Abstract:
... The chemoenzymatic conversion of cyclohexanone to ε-caprolactone (1.25 M) mediated by immobilized lipase from T. laibacchi was successfully achieved with a yield of 98.6%, which is much higher than that in previous studies. A proposed kinetic model consisting of two enzymatic reactions catalyzed by the lipase and one chemical reaction was developed, which fitted the experimental data very well. It ...
DOI:
10.1021/acssuschemeng.9b02521

14. Metal-Free Mesoporous SiO2 Nanorods as a Highly Efficient Catalyst for the Baeyer–Villiger Oxidation under Mild Conditions

Author:
Xueyao Zhang; Honglei Yang; Guangxue Yang; Shuwen Li; Xiang Wang; Jiantai Ma
Source:
ACS sustainable chemistry & engineering 2018 v.6 no.5 pp. 5868-5876
ISSN:
2168-0485
Subject:
adsorption; atmospheric pressure; catalysts; catalytic activity; cyclohexanones; electron paramagnetic resonance spectroscopy; filtration; free radicals; nanorods; oxidants; oxidation; porous media; silica; surface area; sustainable technology
Abstract:
... The development of efficient and environmentally friendly catalysts for oxidative reaction is of great importance in applied catalysis. In this work, a simple and environmentally benign approach for highly selective preparation of ε-caprolactone by oxidation of cyclohexanone has been carried out, which employed metal-free mesoporous silica (mSiO₂) nanorods as catalyst under atmospheric pressure. T ...
DOI:
10.1021/acssuschemeng.7b04167

15. Room-Temperature Tandem Condensation-Hydrogenation Catalyzed by Porous C₃N₄ Nanosheet-Supported Pd Nanoparticles

Author:
Renfeng Nie; Minda Chen; Yuchen Pei; Biying Zhang; Long Qi; Jingwen Chen; Tian Wei Goh; Zhiyuan Qi; Zhiguo Zhang; Wenyu Huang
Source:
ACS sustainable chemistry & engineering 2018 v.7 no.3 pp. 3356-3363
ISSN:
2168-0485
Subject:
ambient temperature; carbon nitride; catalysts; catalytic activity; cyclohexanones; hydrogen; hydrogenation; nanoparticles; nanosheets; nitriles; palladium; surface area
Abstract:
... Tandem catalysis, often inspired by biological systems, offers many advantages in the synthesis of highly functionalized small molecules. NH₂-grafted porous C₃N₄ nanosheet with rich N species and surface area of 138 m²/g was fabricated via a NH₃-exfoliation method. After supporting Pd nanoparticles, the resulting bifunctional catalyst (Pd/C₃N₄–NH₂) could catalyze a one-step tandem condensation-hyd ...
DOI:
10.1021/acssuschemeng.8b05531

16. Synthesis of Decaline-Type Thermal-Stable Jet Fuel Additives with Cycloketones

Author:
Ran Wang; Guangyi Li; Hao Tang; Aiqin Wang; Guoliang Xu; Yu Cong; Xiaodong Wang; Tao Zhang; Ning Li
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.20 pp. 17354-17361
ISSN:
2168-0485
Subject:
Bronsted acids; Lewis acids; acetates; additives; biomass; carbon; catalysts; cyclohexanones; energy density; ethanolamine; fuels; hemicellulose; ionic liquids; isomerization; thermal stability; zeolites
Abstract:
... Decalin is a jet fuel additive with high thermal stability and energy density. Herein, we reported a novel method for the preparation of decalin from cyclopentanone, a hemicellulose derived cycloketone. Ethanolamine acetate (EAOAc), an ionic liquid catalyst which can be derived from biomass, was first applied to the self-aldol condensation of cyclopentanone and demonstrated good activity for this ...
DOI:
10.1021/acssuschemeng.9b04288

17. Formation and Fate of Carboxylic Acids in the Lignin-First Biorefining of Lignocellulose via H-Transfer Catalyzed by Raney Ni

Author:
Inês Graça; Robert T. Woodward; Marco Kennema; Roberto Rinaldi
Source:
ACS sustainable chemistry & engineering 2018 v.6 no.10 pp. 13408-13419
ISSN:
2168-0485
Subject:
biorefining; catalysts; cooking; cyclohexanones; formic acid; hydrogen; hydrogenation; isopropyl alcohol; lignin; lignocellulose; models; nickel; phenol; solvents; streams; sugar alcohols; xylan
Abstract:
... Lignin-first biorefining constitutes a new research field in which the overarching objective is the prevention of lignin recalcitrance while providing high-quality pulps. For this purpose, the solvent extraction of lignin is performed in the presence of a hydrogenation catalyst, employing H₂ pressure or an H-donor solvent (e.g., 2-propanol), and thus leading to passivation of reactive lignin fragm ...
DOI:
10.1021/acssuschemeng.8b03190

18. Lewis Acid Catalyzed Conversion of 5-Hydroxymethylfurfural to 1,2,4-Benzenetriol, an Overlooked Biobased Compound

Author:
Angela J. Kumalaputri; Caelan Randolph; Edwin Otten; Hero J. Heeres; Peter J. Deuss
Source:
ACS sustainable chemistry & engineering 2018 v.6 no.3 pp. 3419-3425
ISSN:
2168-0485
Subject:
Lewis acids; aluminum chloride; aluminum oxide; benzene; carbohydrates; catalysts; catalytic activity; cyclohexanones; dimerization; feedstocks; hydroxymethylfurfural; iron; levulinic acid; oils; oxygen; zinc
Abstract:
... 5-Hydroxymethylfurfural (HMF) is a platform chemical that can be produced from renewable carbohydrate sources. HMF can be converted to 1,2,4-benzenetriol (BTO) which after catalytic hydrodeoxygenation provides a route to cyclohexanone and cyclohexanol. This mixture, known as KA oil, is an important feedstock for polymeric products such as nylons which use benzene as feedstock that is obtained from ...
DOI:
10.1021/acssuschemeng.7b03648
PubMed:
29607267
PubMed Central:
PMC5871338