MWCNT incorporated silica aerogel prepared by ambient pressure drying: A recyclable catalyst for multicomponent synthesis of benzylpyrazolyl coumarin at room temperature
- Title
- MWCNT incorporated silica aerogel prepared by ambient pressure drying: A recyclable catalyst for multicomponent synthesis of benzylpyrazolyl coumarin at room temperature
- Author
- 이선영
- Keywords
- MWCNT/silica aerogel synthesis; ambient pressure drying; heterogeneous catalysis; multicomponent reaction; benzylpyrazolyl coumarin
- Issue Date
- 2018-01
- Publisher
- Payame Noor University
- Citation
- Iranian Chemical Communication, v. 6, NO. 1, Page. 19-29
- Abstract
- Multiwalled Carbon Nanotube (MWCNT) reinforced silica aerogel was synthesized in a very simple and cost effective sol -gel method. The process was followed by ambient pressure drying, and then the aerogel material was characterized by XRD, BET, SEM, EDX and FT-IR. 2.3 x 10(-3) wt% MWCNTs were successfully incorporated in sodium silicate based silica aerogel. This metal-free nanocomposite catalyzed a four component organic reaction among 4-hydroxy coumarin, benzaldehyde, phenyl hydrazine, and ethyl acetoacetate for synthesizing medicinally important benzylpyrazolyl coumarin at room temperature. The MWCNT/silica aerogel composite material having easy accessible active sites and high catalytic activity was easily recovered and reused. The aerogel composite when impregnated with ceria offered very efficient and selective reaction methodology.
- URI
- https://icc.journals.pnu.ac.ir/article_4216.htmlhttps://repository.hanyang.ac.kr/handle/20.500.11754/181505
- ISSN
- 2345-4806
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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- 4184_이선영.pdfDownload
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