Acid‐Base Magnetic Silica Heterogeneous Catalyst for Green Aldol and Aza‐Michael Reactions

2021 ◽  
Vol 6 (44) ◽  
pp. 12424-12430
Author(s):  
S. Fatemeh Mohammadi Metkazini ◽  
Akbar Heydari
Keyword(s):  
Heterogeneous Catalyst ◽  
Acid Base ◽  
Michael Reactions ◽  
Magnetic Silica

Synthesis of the quinazolinone derivatives using an acid-functionalized magnetic silica heterogeneous catalyst in terms of green chemistry

2020 ◽  
Author(s):  
Saeid Ahmadizadeh Shendy ◽  
Mirzaagha Babazadeh ◽  
Gholam Hossein Shahverdizadeh ◽  
Rahim Hosseinzadeh-Khanmiri ◽  
Moosa Es’haghi
Keyword(s):  
Green Chemistry ◽  
Heterogeneous Catalyst ◽  
Magnetic Silica ◽  
Quinazolinone Derivatives

Magnesium oxide as a heterogeneous catalyst support

2016 ◽  
Vol 36 (1) ◽  
pp. 1-41 ◽  
Author(s):  
Nurhidayatullaili Muhd Julkapli ◽  
Samira Bagheri
Keyword(s):  
Surface Area ◽  
Heterogeneous Catalyst ◽  
High Surface ◽  
Catalyst Support ◽  
High Surface Area ◽  
Nanocrystalline Structure ◽  
Catalytic Performance ◽  
Acid Base ◽  
Factors Affecting ◽  
Crystal And Electronic Structure

AbstractResearchers normally consider MgO as a promising high-surface-area heterogeneous catalyst support, additive, and promoter for many kinds of chemical reactions due to its certain properties, including stoichiometry and composition, cation valence, redox properties, acid-base character, and crystal and electronic structure. The presence of MgO as a support catalyst also modifies the electronic state of the overall catalytic performance by electron transfer between the native catalyst and MgO as support. The influence is clarified by alteration of acid-base properties of the catalyst-supported MgO. Meanwhile, the method, chemical composition, and condition in the preparation of MgO are the important factors affecting its surface and catalytic properties. Therefore, MgO with a high surface area and nanocrystalline structure has encouraging applications for some reactions, including as dry reforming, dehydrohalogenation, oxidative dehydrogenation of butane, nonoxidative dehydrogenation of ethylbenzene, decomposition of CCl

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