Dissolution of wood in α-keto acid and aldehydic carboxylic acids and fractionation at room temperature

2014 ◽  
Vol 16 (7) ◽  
pp. 3569-3579 ◽  
Author(s):  
Yuri Nishiwaki-Akine ◽  
Takashi Watanabe
Keyword(s):  
Formic Acid ◽  
Carboxylic Acids ◽  
Pyruvic Acid ◽  
Ball Mill ◽  
Room Temperature ◽  
Glyoxylic Acid ◽  
Keto Acid

Wood pulverised using a ball mill was dissolved in an α-keto acid, pyruvic acid, and two aldehydic carboxylic acids, namely glyoxylic acid and formic acid, at room temperature.

The Corrosion of E-Glass Fibres in Complexing Organic Acids

2008 ◽  
Vol 39-40 ◽  
pp. 311-316 ◽  
Author(s):  
Robert L. Jones
Keyword(s):  
Oxalic Acid ◽  
Organic Acids ◽  
Carboxylic Acids ◽  
Pyruvic Acid ◽  
Glass Matrix ◽  
Glyoxylic Acid ◽  
Dicarboxylic Acids ◽  
Strength Loss ◽  
Corrosion Process ◽  
Glass Fibres

This paper examines the leaching patterns of pyruvic acid, and relates this to similar patterns of oxalic, glyoxylic and malonic acids in a further attempt to clarify the mechanism of the corrosion process. It appears that these acids selectively leach boron to a greater extent than other cations, and as boron is part of the E-glass matrix rather than just an interstitial ion, this would explain the means by which these relatively weak acids are able to corrode the glass fibres. It is well known that oxalic acid forms strong complexes with boron, and it is likely that other dicarboxylic acids or carboxylic acids with appropriately placed ligand groups (e.g. glyoxylic acid) will do likewise. This work presents a study of the rate of strength loss and the rate of leaching of cations from E-glass fibres with particular emphasis on boron.

scholarly journals A Process for Hydrogen Production from the Catalytic Decomposition of Formic Acid over Iridium—Palladium Nanoparticles

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3258
Author(s):  
Hamed M. Alshammari ◽  
Mohammad Hayal Alotaibi ◽  
Obaid F. Aldosari ◽  
Abdulellah S. Alsolami ◽  
Nuha A. Alotaibi ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Formic Acid ◽  
Activated Charcoal ◽  
Palladium Nanoparticles ◽  
Room Temperature ◽  
Catalytic Decomposition ◽  
Conversion Yield ◽  
Production Of Hydrogen ◽  
Commercial Applications

The present study investigates a process for the selective production of hydrogen from the catalytic decomposition of formic acid in the presence of iridium and iridium–palladium nanoparticles under various conditions. It was found that a loading of 1 wt.% of 2% palladium in the presence of 1% iridium over activated charcoal led to a 43% conversion of formic acid to hydrogen at room temperature after 4 h. Increasing the temperature to 60 °C led to further decomposition and an improvement in conversion yield to 63%. Dilution of formic acid from 0.5 to 0.2 M improved the decomposition, reaching conversion to 81%. The reported process could potentially be used in commercial applications.

scholarly journals Mechanically induced solvent-free esterification method at room temperature

RSC Advances ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 5080-5085
Author(s):  
Lei Zheng ◽  
Chen Sun ◽  
Wenhao Xu ◽  
Alexandr V. Dushkin ◽  
Nikolay Polyakov ◽  
...  
Keyword(s):  
Natural Products ◽  
Carboxylic Acids ◽  
Late Stage ◽  
Reaction Mechanisms ◽  
Room Temperature ◽  
Solvent Free ◽  
Mild Conditions

We have developed I2/KH2PO2 and KI/P(OEt)3 strategy syntheses of esters from carboxylic acids and alcohols through different reaction mechanisms. The advantages of present protocol: mild conditions and late-stage diversification of natural products.

Sustainable Isomerization of α‐Pinene Oxide to trans ‐Carveol using Formic Acid/Aniline System at Room Temperature

2021 ◽  
pp. 2000212
Author(s):  
Krishnan Ravi ◽  
Dhanaji R. Naikwadi ◽  
Balasaheb D. Bankar ◽  
Ankush V. Biradar
Keyword(s):  
Formic Acid ◽  
Room Temperature

A Ag–Pd alloy supported on an amine-functionalized UiO-66 as an efficient synergetic catalyst for the dehydrogenation of formic acid at room temperature

2016 ◽  
Vol 6 (3) ◽  
pp. 869-874 ◽  
Author(s):  
Shu-Tao Gao ◽  
Weihua Liu ◽  
Cheng Feng ◽  
Ning-Zhao Shang ◽  
Chun Wang
Keyword(s):  
Catalytic Activity ◽  
Formic Acid ◽  
Room Temperature ◽  
High Catalytic Activity ◽  
Amine Functionalized ◽  
Pd Alloy

Ag–Pd alloys deposited on an amine-functionalized UiO-66(NH2–UiO-66) have been successfully prepared via a pre-coordination method and used as a AgPd@NH2–UiO-66 catalyst with 100% H2 selectivity and a high catalytic activity.

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