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Magnetic solid alkalic catalyst, its preparing method and use

A solid base catalyst and magnetic catalyst technology, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as unfavorable industrialization, high requirements for reaction conditions, long preparation cycle, etc., and achieve separation and recovery Convenience, low cost, and simple production process

Inactive Publication Date: 2007-08-29
中兴能源技术(武汉)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing patent CN1470323A uses liquid-liquid reaction to prepare magnetic nano-solid alkali catalyst, including the preparation of nano-magnetic core powder, magnetic precursor, and magnetic catalyst. The preparation of nano-magnetic core powder and magnetic precursor Completed in the full reverse mixed liquid membrane reactor and crystallization tank, the pH value of the sample must be strictly controlled, the reaction conditions are high, and the preparation cycle is long, which is not conducive to industrialization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 4.15g Fe 3 o 4 , 6.80g Ca(Ac) 2 ·H 2 O fully mixed and ground to obtain the mixture, and added 1% of the mixture mass concentration is 10wt% polyvinyl alcohol aqueous solution to make it uniformly dispersed in the above mixture, passed through 80 mesh sieve; baked in a muffle furnace at 400 ° C and kept for 4h, As a catalyst carrier; weigh 14.15g KF 2H 2 O, add 70ml of deionized water to make a solution as the impregnation solution; put the roasted powder in the above impregnation solution, use a magnetic stirrer to raise the temperature to 50°C and stir, make it fully impregnate for 4 hours, and let it stand for 16 hours Then put it in a drying oven at 100°C for 12 hours; put the dried sample in a muffle furnace, calcinate at 500°C and keep it warm for 5 hours to get KF / CaO / Fe 3 o 4 Magnetic solid base catalyst.

[0021] Using soybean oil as raw material, KF / CaO / Fe 3 o 4 As a catalyst, the molar ratio of alcohol to oil is 9:1, the catalyst dosage is 4wt% ...

Embodiment 2

[0023] Weigh 3.04g Fe 3 o 4 , 4.52g CaO are fully mixed and ground to obtain the mixture, and the concentration of 2% of the mixture mass is added to be 8wt% polyvinyl alcohol aqueous solution to make it uniformly dispersed in the above mixture, and pass through 80 mesh sieves; Insulate for 4h, as the catalyst carrier; weigh 12.15g KF 2H 2 O, add 20ml of deionized water to make a solution as the impregnation solution; put the roasted powder in the above impregnation solution, use a magnetic stirrer to raise the temperature to 50°C and stir, make it fully impregnate for 4 hours, and let it stand for 10 hours Then place it in a drying oven at 100°C for 12 hours; place the dried sample in a muffle furnace, calcinate at 600°C and keep it warm for 6 hours to obtain KF / CaO / Fe 3 o 4 Magnetic solid base catalyst.

[0024] Rapeseed oil as raw material, KF / CaO / Fe 3 o 4 As a catalyst, the molar ratio of alcohol to oil is 12:1, the catalyst dosage is 1wt% of the oil weight, the reac...

Embodiment 3

[0026] Weigh 18.68g Fe 3 o 4 , 23.36g CaCO 3 Thoroughly mix and grind the obtained mixture, and add 10% of the mass of the mixture to a 5wt% polyvinyl alcohol aqueous solution to disperse evenly in the above mixture, pass through a 120-mesh sieve; bake at 400°C in a muffle furnace and keep it warm for 2h to make It is the carrier of the catalyst; weigh 7.56gKF·2H 2 O, add 40ml of deionized water to make a solution as the impregnation solution; place the roasted powder in the above impregnation solution, use an ultrasonic cleaner to heat up to 60°C and oscillate, make it fully impregnated for 3 hours, and then stand and age for 16 hours Put it in a drying oven at 100°C for 24 hours; place the dried sample in a muffle furnace, calcinate it at 600°C and keep it warm for 5 hours to get KF / CaO / Fe 3 o 4 Magnetic solid base catalyst.

[0027] Using palm oil as raw material, KF / CaO / Fe 3 o 4 As a catalyst, the molar ratio of alcohol to oil is 12:1, the catalyst dosage is 2wt% of t...

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PUM

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Abstract

This invention involves magnetic solid base catalyst, its components including magnetic material and metal oxide or magnetic vector with a mixture of metal salt as a catalyst, activity group is alkali metal salts. Their preparation methods: magnetic material and metal oxide or metal salts fully mixed grinding and dispersed evenly to join the binder, and then roasted and insulation, get a magnetic catalyst carrier; put active component into deionized water prepared impregnating solution; Magnetic catalyst carrier parked in the above impregnated solution to response, static aging, drying, calcination and insulation, then get a magnetic solid base catalyst. The invention magnetic solid base catalyst production process is simple, low cost, used for the preparation of the bio-diesel in transesterification reaction, catalytic function is superior, separation and recovery is convenient after transesterification reaction.

Description

technical field [0001] The invention relates to a loaded magnetic solid base catalyst and a preparation method thereof, which is applied to biodiesel ester exchange reaction. Background technique [0002] Biodiesel is called "renewable fuel oil". It is a mixture of fatty acid methyl esters or fatty acid ethyl esters processed by cracking vegetable oil and animal oil as raw materials through catalyst action. It is a high-quality diesel substitute. Oil crops such as soybeans, peanuts, and rapeseeds, wild oil fruits such as oil palm and pistachio, oil-bearing aquatic plants such as microalgae, animal fats, and even waste oil after cooking in hotels and restaurants can be used to refine biodiesel. The molecular weight of biodiesel is similar to that of diesel, and it has similar combustion and power characteristics to mineral diesel, and has environmental friendliness that mineral diesel does not have. [0003] At present, most biodiesel is prepared by homogeneous transesterifi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/12B01J27/232B01J27/25B01J37/02C10G3/00
CPCY02P30/20
Inventor 鲁晓勇鲍德艳李浔苏明华
Owner 中兴能源技术(武汉)有限公司
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