Direct dimethyl carbonate synthesis from CO 2 and methanol over a flower-like CeO 2 catalyst with 2-cyanopyridine as a dehydrating agent in continuous packed-bed reactor.

Autor: Sereewatthanawut I; King Prajadhipok's Institute Bangkok 10210 Thailand.; Faculty of Engineering and Technology, Pathumthani University Pathumthani 12000 Thailand., Swadchaipong N; Chemical and Process Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut's University of Technology North Bangkok Bangkok 10800 Thailand unalome.w.cpe@tggs-bangkok.org., Tongnan V; Chemical and Process Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut's University of Technology North Bangkok Bangkok 10800 Thailand unalome.w.cpe@tggs-bangkok.org., Khajonvittayakul C; Chemical and Process Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut's University of Technology North Bangkok Bangkok 10800 Thailand unalome.w.cpe@tggs-bangkok.org., Maneesard P; Chemical and Process Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut's University of Technology North Bangkok Bangkok 10800 Thailand unalome.w.cpe@tggs-bangkok.org., Ampairojanawong R; Chemical and Process Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut's University of Technology North Bangkok Bangkok 10800 Thailand unalome.w.cpe@tggs-bangkok.org., Makdee A; Chemical and Process Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut's University of Technology North Bangkok Bangkok 10800 Thailand unalome.w.cpe@tggs-bangkok.org., Hartley M; Department of Chemical Engineering, Faculty of Engineering, King Mongkut's University of Technology North Bangkok Bangkok 10800 Thailand., Li K; Chemical Engineering, Imperial College London SW7 2AZ UK., Hartley UW; Chemical and Process Engineering, The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut's University of Technology North Bangkok Bangkok 10800 Thailand unalome.w.cpe@tggs-bangkok.org.
Jazyk: angličtina
Zdroj: RSC advances [RSC Adv] 2024 Nov 18; Vol. 14 (49), pp. 36771-36781. Date of Electronic Publication: 2024 Nov 18 (Print Publication: 2024).
DOI: 10.1039/d4ra06187j
Abstrakt: A flower-like CeO 2 catalyst was successfully synthesized using an acrylamide graft copolymerized on glucose under hydrothermal conditions and used for the direct synthesis of dimethyl carbonate (DMC) from CO 2 and CH 3 OH in a packed-bed reactor with 2-cyanopyridine as a dehydrating agent. The synthesized flower-like CeO 2 exhibited both basicity and acidity properties with values of 300 μmol g -1 and 80 μmol g -1 , respectively, according to CO 2 -TPD and NH 3 -TPD results. The effect of reaction parameters such as reaction temperature, feed ratio, catalyst quantity, and operating pressure on the DMC production over the flower-like CeO 2 catalyst was investigated. The optimum conditions were found to be a temperature of 120 °C, catalyst weight of 1.0 g, CH 3 OH : CO 2 ratio of 1 : 1, and pressure of 30 bar, which provided the highest CH 3 OH conversion, DMC selectivity, and DMC yield of 86.6%, 99.3%, and 86.0%, respectively. Furthermore, no changes were observed in the structure, morphology, and particle size of the flower-like CeO 2 catalyst after the DMC synthesis reaction, indicating that the synthesized catalyst was resistant to the reaction test under such optimum reaction conditions.
Competing Interests: The authors confirm that there is no conflict of interest.
(This journal is © The Royal Society of Chemistry.)
Databáze: MEDLINE
Externí odkaz: