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Catalytic behavior of a ZnO/TiO 2 composite in the synthesis of polycarbonate diol.

Authors :
Chong R
Qian F
Sun ZH
Wei MJ
Zhou WY
Zhang J
He MY
Chen Q
Qian JF
Source :
RSC advances [RSC Adv] 2023 Feb 07; Vol. 13 (8), pp. 4890-4897. Date of Electronic Publication: 2023 Feb 07 (Print Publication: 2023).
Publication Year :
2023

Abstract

ZnO/TiO <subscript>2</subscript> catalysts with different ZnO contents have been prepared through equal volume impregnation method, characterized by XRD, SEM, Py-IR, ICP, XPS, NH <subscript>3</subscript> -TPD and N <subscript>2</subscript> adsorption/desorption, and evaluated in the synthesis of polycarbonate diol (PCDL) through transesterification. The results showed that titanium zinc oxide formed in these catalysts, and the content of acidic sites varied with the ZnO content, and ZnO/TiO <subscript>2</subscript> (10%) has the highest acid amount. The ZnO/TiO <subscript>2</subscript> (20%) with medium acidic sites showed the highest catalytic activity. The synthesis process of polycarbonate glycol was also optimized. Under the optimal reaction conditions, the yield of PCDL was 72.5%, and the M <subscript>n</subscript> reached 4829 g mol <superscript>-1</superscript> with a PDI of 1.6.<br />Competing Interests: The authors declare no conflict of interest.<br /> (This journal is © The Royal Society of Chemistry.)

Details

Language :
English
ISSN :
2046-2069
Volume :
13
Issue :
8
Database :
MEDLINE
Journal :
RSC advances
Publication Type :
Academic Journal
Accession number :
36762090
Full Text :
https://doi.org/10.1039/d2ra07527j