In-depth study on the effect of oxygen-containing functional groups in pyrolysis oil by P-31 NMR.

ABSTRACT: One of the major obstacles to the widespread use of pyrolysis oil is its high oxygen content, with oxygen atoms being mainly present in the hydroxyl and the carboxyl groups. Therefore, quantitative and accurate characterization of oxygen-containing functional groups is of great significance. This study employed ³¹P NMR to conduct in-depth studies on several model compounds including four kinds of alcohols and carboxylic acids. The model compounds have been investigated for stability in ³¹P NMR solution for both short storage (4 hours) and long storage (14 days), namely by in and ex situ monitoring. The experimental phenomena indicates that carboxylic hydroxyl has poor stability compared to alcohols hydroxyl group, which is reflected in the amount of alco

SUBMITTER: Wu Z 

PROVIDER: S-EPMC9070637 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature