http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Luiz K. C. de Souza (검색결과 1 건)
- 무료
- 기관 내 무료
- 유료
-
A facile ultrasound‑assisted synthesis of mesoporous carbon
Rayanne O. Araujo,Vanuza O. Santos,Jamily L. Santos,Flaviana C. P. Ribeiro,Maria J. F. Costa,Jamal S. Chaar,Newton P. S. Falc?o,Carlos E. F. da Costa,Luiz K. C. de Souza 한국탄소학회 2023 Carbon Letters Vol.33 No.1
The ultrasonic method is an alternative to the conventional route to produce structured carbon materials, offering the advantages of synthesis in a short period of time under room temperature. The main objective of this work is to synthesize a sulfonated mesoporous carbon catalyst from a phenolic resin composed of phloroglucinol and formaldehyde. The synthesis was performed by the soft-template method in an ultrasonic processor and the product was subsequently carbonized and sulfonated for application in the esterification model reaction. Functionalization with sulfuric acid of MCS5-6 h sample brought about a decrease in porosity but simultaneously resulted in the generation of functional groups of an acidic nature. The MCS5-6 h catalyst with a sulfonic density of 1.6 mmol g? 1, surface area of 402 m2 g? 1 and pore diameter of 10.6 nm maintained in mesoporous even after acid treatment. MCS5-6 h showed excellent activity in the esterification reaction with 95% oleic acid conversion. The recyclability of MCS5-6 h was satisfactory during five reaction cycles. The present work addressed a promising alternative for the synthesis of carbon catalysts using ultrasound irradiation, thus providing an alternative with a lower cost of time and energy for large-scale production.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
