scholarly journals Direct synthesis of hierarchical ZSM-5 zeolite using cetyltrimethylammonium as structure directing agent for methanol-to-hydrocarbons conversion

2017 ◽  
Vol 7 (19) ◽  
pp. 4520-4533 ◽  
Author(s):  
Lingqian Meng ◽  
Brahim Mezari ◽  
Maarten G. Goesten ◽  
Wannaruedee Wannapakdee ◽  
Robert Pestman ◽  
...  
Keyword(s):  
Direct Synthesis ◽  
Structure Directing Agent ◽  
Methanol To Hydrocarbons ◽  
One Step

KOH and RbOH are suitable bases to crystallize hierarchical ZSM-5 in one step using cetyltrimethylammonium as the only structure-directing agent.

scholarly journals One-Step Direct Synthesis of SiO2 -TiO2 Composite Nanoparticle Assemblies with Hollow Spherical Morphology

2017 ◽  
Vol 2017 (24) ◽  
pp. 3016-3016
Author(s):  
Hien Thi Thu Nguyen ◽  
Teppei Habu ◽  
Masataka Ohtani ◽  
Kazuya Kobiro
Keyword(s):  
Direct Synthesis ◽  
Spherical Morphology ◽  
Nanoparticle Assemblies ◽  
Composite Nanoparticle ◽  
One Step

One-Step Direct Synthesis of SiO2-TiO2Composite Nanoparticle Assemblies with Hollow Spherical Morphology

2017 ◽  
Vol 2017 (24) ◽  
pp. 3017-3023 ◽  
Author(s):  
Hien Thi Thu Nguyen ◽  
Teppei Habu ◽  
Masataka Ohtani ◽  
Kazuya Kobiro
Keyword(s):  
Direct Synthesis ◽  
Spherical Morphology ◽  
Nanoparticle Assemblies ◽  
One Step

Direct synthesis of methyl phosphoramidates in carbohydrates

2015 ◽  
Vol 13 (36) ◽  
pp. 9457-9461 ◽  
Author(s):  
Vijay M. Dhurandhare ◽  
Girija Prasad Mishra ◽  
Sarah Lam ◽  
Cheng-Chung Wang
Keyword(s):  
Direct Synthesis ◽  
Quantitative Yield ◽  
One Step

Direct one-step synthesis with high regioselectivity, 16 examples up to quantitative yield.

scholarly journals Valence Regulation of Ultrathin Cerium Vanadate Nanosheets for Enhanced Photocatalytic CO2 Reduction to CO

Catalysts ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1115
Author(s):  
Lujia Ding ◽  
Qiutong Han ◽  
Hong Lu ◽  
Yong Yang ◽  
Gang Lu ◽  
...  
Keyword(s):  
Co2 Reduction ◽  
Catalytic Efficiency ◽  
State Regulation ◽  
Photocatalytic Reaction ◽  
Photocatalytic Efficiency ◽  
Structure Directing Agent ◽  
Valence States ◽  
Cerium Vanadate ◽  
One Step ◽  
The Relationship

Atomic valence state regulation is an advantageous approach for improving photocatalytic efficiency and product selectivity. However, it is difficult to precisely control the ratio of the different valence states on the surface and the relationship between the surface valence change and catalytic efficiency in the photocatalytic reaction process is unclear. Herein, CeVO4 ultrathin nanosheets were fabricated by one-step solvothermal method with ethanolamine (MEA) as the structure-directing agent. The ratio of the concentrations of intrinsic Ce4+ and Ce3+ ions is precisely modulated from 19.82:100 to 13.33:100 changed by the volume of MEA added without morphology modification. The photocatalytic efficiency increases as the concentrations of intrinsic Ce4+ and Ce3+ ions decrease and CV3 (prepared with 3 mL of MEA) shows the highest CO generation rate approximately 6 and 14 times larger than CV (prepared without MEA) and CV1 (prepared with 1 mL of MEA), respectively, in the photocatalytic CO2 reduction. Interestingly, about 6.8% photo-induced Ce4+ ions were generated on the surface of the catalysts during the photocatalytic CO2 reduction without any phase and morphology changes for CV3. The photocatalytic reaction mechanism is proposed considering the intrinsic and photo-induced Ce4+ ions to obtain efficient photocatalysts.

One-Step Direct Synthesis of a Ti-Doped Sodium Alanate Hydrogen Storage Material.

ChemInform ◽  
2005 ◽  
Vol 36 (51) ◽  
Author(s):  
Jose M. Bellosta von Colbe ◽  
Michael Felderhoff ◽  
Borislav Bogdanovic ◽  
Ferdi Schueth ◽  
Claudia Weidenthaler
Keyword(s):  
Hydrogen Storage ◽  
Direct Synthesis ◽  
Hydrogen Storage Material ◽  
Storage Material ◽  
Sodium Alanate ◽  
One Step

ChemInform Abstract: Cycling Properties of Sc- and Ce-Doped NaAlH4Hydrogen Storage Materials Prepared by the One-Step Direct Synthesis Method.

ChemInform ◽  
2009 ◽  
Vol 40 (22) ◽  
Author(s):  
Borislav Bogdanovic ◽  
Michael Felderhoff ◽  
Andre Pommerin ◽  
Ferdi Schueth ◽  
Nick Spielkamp ◽  
...  
Keyword(s):  
Direct Synthesis ◽  
Synthesis Method ◽  
Storage Materials ◽  
One Step ◽  
The One

Direct synthesis of three-dimensional MWW zeolite with cyclohexylamine as an organic structure-directing agent

2018 ◽  
Vol 6 (26) ◽  
pp. 12244-12249 ◽  
Author(s):  
Weifeng Chu ◽  
Xiujie Li ◽  
Shenglin Liu ◽  
Xiangxue Zhu ◽  
Sujuan Xie ◽  
...  
Keyword(s):  
Direct Synthesis ◽  
Three Dimensional ◽  
Cost Effective ◽  
Hydrothermal Conditions ◽  
Structure Directing Agent ◽  
Organic Structure ◽  
Low Toxicity ◽  
Mww Zeolite

MCM-49 zeolite with a three-dimensional MWW framework was directly synthesized using low-toxicity and cost-effective cyclohexylamine (CHA) as an organic structure-directing agent under hydrothermal conditions.

Direct Synthesis of N-Functionalized Dipropargylamine Linkers as Models for Use in Peptide Stapling

Synlett ◽  
2019 ◽  
Vol 30 (19) ◽  
pp. 2153-2156
Author(s):  
Andrea Renzetti ◽  
Ryan N. Rutherford ◽  
Kozo Fukumoto ◽  
Dominique Kunciw ◽  
Hannah F. Sore ◽  
...  
Keyword(s):  
Direct Synthesis ◽  
Quantitative Yield ◽  
Mild Conditions ◽  
One Step ◽  
Peptide Stapling

N-Substituted dipropargylamines that are suitable as functionalized linkers for peptide stapling can be synthesized in one step under mild conditions from commercially available starting materials (41% to quantitative yield).

Direct Synthesis of Enones by Visible-Light-Promoted Oxygenation of Trisubstituted Olefins Using Molecular Oxygen

Synlett ◽  
2020 ◽  
Vol 31 (14) ◽  
pp. 1372-1377
Author(s):  
Shinji Harada ◽  
Daiki Matsuda ◽  
Takahiro Morikawa ◽  
Atsushi Nishida
Keyword(s):  
Visible Light ◽  
Molecular Oxygen ◽  
Active Oxygen Species ◽  
Direct Synthesis ◽  
Reaction System ◽  
Active Oxygen ◽  
Oxygen Species ◽  
Mechanistic Studies ◽  
Trisubstituted Olefins ◽  
One Step

A one-step synthesis of enones from olefins is described. The reaction was performed under visible-light irradiation in the presence of molecular oxygen and a photocatalyst. The reaction proceeded with various types of trisubstituted olefins to give enones in good yields with high regioselectivity. In particular, oxygen- and nitrogen-containing functional groups, heteroaromatic rings, and cyclopropanes were tolerated. Mechanistic studies and previous reports indicated that the active oxygen species generated in the reaction system is singlet oxygen.

Design of a heterogeneous catalytic process for the continuous and direct synthesis of lactide from lactic acid

2016 ◽  
Vol 18 (22) ◽  
pp. 5978-5983 ◽  
Author(s):  
Pravin P. Upare ◽  
Ji Woong Yoon ◽  
Dong Won Hwang ◽  
U-Hwang Lee ◽  
Young Kyu Hwang ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Reaction Pathway ◽  
Direct Synthesis ◽  
Catalytic Process ◽  
Heterogeneous Catalytic Process ◽  
Atmospheric Conditions ◽  
Heterogeneous Catalytic ◽  
Nanocomposite Catalyst ◽  
One Step ◽  
Optically Pure

We present a continuous one-step reaction pathway for optically pure lactide under atmospheric conditions based on a novel SnO2–SiO2 nanocomposite catalyst.

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