A PHP Error was encountered

Severity: Warning

Message: file_get_contents(https://...@gmail.com&api_key=61f08fa0b96a73de8c900d749fcb997acc09): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests

Filename: helpers/my_audit_helper.php

Line Number: 143

Backtrace:

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 143
Function: file_get_contents

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 209
Function: simplexml_load_file_from_url

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 994
Function: getPubMedXML

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3134
Function: GetPubMedArticleOutput_2016

File: /var/www/html/application/controllers/Detail.php
Line: 574
Function: pubMedSearch_Global

File: /var/www/html/application/controllers/Detail.php
Line: 488
Function: pubMedGetRelatedKeyword

File: /var/www/html/index.php
Line: 316
Function: require_once

Interaction between Acetic Acid and Glycerol: A Model for Secondary Reactions during Holocellulose Pyrolysis. | LitMetric

Interaction between Acetic Acid and Glycerol: A Model for Secondary Reactions during Holocellulose Pyrolysis.

J Phys Chem A

National Engineering Laboratory for Biomass Power Generation Equipment , North China Electric Power University, Beijing 102206 , China.

Published: January 2019

AI Article Synopsis

  • The study analyzes how secondary reactions during the pyrolysis of holocellulose influence the distribution of final products, specifically focusing on acetic acid and glycerol as key interactants.
  • Acetic acid, a carboxylic acid, and glycerol, a hydroxyl-based compound, exhibit strong interactions that enhance dehydration reactions and lead to esterification, forming an ester intermediate.
  • The research uses density functional theory (DFT) to uncover these interactions, contributing to a better understanding of the complex chemistry involved in the pyrolysis process of holocellulose.

Article Abstract

During pyrolysis of holocellulose, secondary reactions of the primary pyrolytic products inevitably occur, affecting the final pyrolytic product distribution. Carboxylic acids from primary pyrolysis process have significant interaction effects on both holocellulose and its pyrolytic products, whereas, the interaction mechanisms are still unclear. In the present study, acetic acid is selected as the typical carboxylic acid product, and glycerol is selected to represent the various hydroxyl-based compounds (both holocellulose and pyrolytic products such as anhydrosugars, etc.). The density functional theory (DFT) method is adopted to investigate the interaction mechanisms between them. Calculation results indicate that acetic acid and glycerol have strong interactions, with acetic acid acting as a catalyst for these interactions in two patterns. (I) Acetic acid enhances the dehydration reactions of glycerol with low energy barriers. (II) Acetic acid and glycerol undergo esterification to form an ester intermediate which then decomposes via various reactions. In addition, the decomposition of acetic acid can also be promoted by the catalysis of glycerol in a certain degree. This study reveals the basic interaction mechanisms between carboxylic acids and hydroxyl-based compounds, providing fundamental information to understand the secondary reactions during pyrolysis of holocellulose.

Download full-text PDF

Source
http://dx.doi.org/10.1021/acs.jpca.8b11264DOI Listing

Publication Analysis

Top Keywords

acetic acid
28
acid glycerol
12
secondary reactions
12
pyrolytic products
12
interaction mechanisms
12
acid
8
pyrolysis holocellulose
8
carboxylic acids
8
holocellulose pyrolytic
8
hydroxyl-based compounds
8

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!

A PHP Error was encountered

Severity: Notice

Message: fwrite(): Write of 34 bytes failed with errno=28 No space left on device

Filename: drivers/Session_files_driver.php

Line Number: 272

Backtrace:

A PHP Error was encountered

Severity: Warning

Message: session_write_close(): Failed to write session data using user defined save handler. (session.save_path: /var/lib/php/sessions)

Filename: Unknown

Line Number: 0

Backtrace: