Nano-scale magnetic solid base catalyst and its preparation...

Details Nano-scale magnetic solid base catalyst and its preparation... Nano-scale magnetic solid base catalyst and its preparation...

2007-07-24

2007-07-24

Nguyen, Cam N. (Department: 1754)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

C502S325000, C502S326000, C502S327000, C502S328000, C502S329000, C502S330000, C502S331000, C502S332000, C502S335000, C502S336000, C502S337000, C502S338000, C502S340000, C502S341000, C502S342000, C502S355000, C502S524000

Reexamination Certificate

active

11040408

ABSTRACT:
This invention describes a nano-scale magnetic solid base catalyst and its preparation method. The catalyst involves a magnetic core coated with a solid base active layer. The synthesis of the nano-scale magnetic cores was first carried out using a rapid nucleation method in a colloid mill reactor using a liquid-liquid reaction. The nano-scale magnetic cores were mixed with a mixed salt solution. The LDH-containing magnetic cores were prepared in a colloid mill reactor by a rapid nucleation method, and subsequently calcined to give a solid base mixed oxides coated on magnetic cores. The characteristics of this catalyst are: nano-scale, high surface area and high activity and selectivity in base-catalyzed reactions. The highly dispersed catalyst can be easily reclaimed using an external magnetic field because of its magnetism. The catalyst can be utilized in base catalysis in organic reactions such as glycol ether synthesis, ester exchange, aldol condensation, etc.

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