Visible-light-driven prompt and quantitative production of lactic acid from biomass sugars over a N-TiO2 photothermal catalyst

2021 ◽  
Author(s):  
Yingying Cao ◽  
Dandan Chen ◽  
Ye Meng ◽  
Shunmugavel Saravanamurugan ◽  
Hu Li
Keyword(s):  
Lactic Acid ◽  
High Temperature ◽  
Reaction Time ◽  
Visible Light ◽  
Alternative Route ◽  
Biomass Feedstock ◽  
Visible Light Driven ◽  
Potential Alternative ◽  
Biomass Sugars

Chemocatalytic production of lactic acid from biomass feedstock is a highly potential alternative route, but with prerequisites of long reaction time, high temperature, and/or a tailored catalyst. In this work,...

Study on a High-Temperature Delayed Cross-Linked Acid

2012 ◽  
Vol 624 ◽  
pp. 252-255 ◽  
Author(s):  
Xiao Zhao ◽  
Qi Song ◽  
Hai Lin ◽  
Yan Ling Wang ◽  
Zeng Bao Wang ◽  
...  
Keyword(s):  
Lactic Acid ◽  
High Temperature ◽  
Reaction Time ◽  
Influencing Factors ◽  
Reaction Temperature ◽  
Zirconium Oxychloride ◽  
Cross Linking ◽  
Acid System ◽  
Mass Ratio ◽  
Reaction Conditions

A retarded zirconium cross-linking agent ECA-1 was prepared by using zirconium oxychloride, lactic acid， xylitol, and so on, then we got a high-temperature delayed cross-linking acid with cross-linking agent ECA-1 added to EVA-180 gelling acid, cross-linked acid performance and its influencing factors were discussed in details, such as reaction conditions of crosslinker, concentrations of crosslinker and thickener, and so on. The results showed that the obtained cross-linked acid had good temperature-tolerate and shear-tolerate properties when the mass ratio of zirconium oxychloride, lactic acid and xylitol is 1:1.25:0.0208 , the reaction temperature is 50~55°C, the reaction time is 4 hours, the delayed cross-linking time of acid system can be adjusted by changing the dosage of crosslinker and thickener.

Structure defects in g-C3N4 limit visible light driven hydrogen evolution and photovoltage

2014 ◽  
Vol 2 (47) ◽  
pp. 20338-20344 ◽  
Author(s):  
Po Wu ◽  
Jiarui Wang ◽  
Jing Zhao ◽  
Liejin Guo ◽  
Frank E. Osterloh
Keyword(s):  
High Temperature ◽  
Solar Energy ◽  
Visible Light ◽  
Energy Conversion ◽  
Hydrogen Evolution ◽  
Solar Energy Conversion ◽  
Structure Defects ◽  
Visible Light Driven ◽  
High Temperature Calcination

Two kinds of defects in g-C3N4 caused by high temperature calcination limit the photocatalytic H2 evolution activity. These defects are identified as amino/imino groups and controlling them will be key to improving the performance of the material for solar energy conversion.

Visible Light-Mediated Oxidative Debenzylation

2020 ◽  
Author(s):  
Cristian Cavedon ◽  
Eric T. Sletten ◽  
Amiera Madani ◽  
Olaf Niemeyer ◽  
Peter H. Seeberger ◽  
...  
Keyword(s):  
Reaction Time ◽  
Visible Light ◽  
Functional Groups ◽  
Continuous Flow ◽  
Protecting Groups ◽  
Benzyl Ether ◽  
Complex Molecules ◽  
Protective Groups ◽  
Benzyl Ethers ◽  
Harsh Conditions

Protecting groups are key in the synthesis of complex molecules such as carbohydrates to distinguish functional groups of similar reactivity. The harsh conditions required to cleave stable benzyl ether protective groups are not compatible with many other protective and functional groups. The mild, visible light-mediated debenzylation disclosed here renders benzyl ethers orthogonal protective groups. Key to success is the use of 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) as stoichiometric or catalytic photooxidant such that benzyl ethers can be cleaved in the presence of azides, alkenes, and alkynes. The reaction time for this transformation can be reduced from hours to minutes in continuous flow. <br>

scholarly journals Rodlike AgI/Ag2Mo2O7 Heterojunctions with Enhanced Visible-Light-Driven Photocatalytic Activity

ACS Omega ◽  
2019 ◽  
Vol 4 (5) ◽  
pp. 7919-7930 ◽  
Author(s):  
Zhongyi Jiao ◽  
Zhendong Liu ◽  
Zhen Ma
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Driven
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