Zirconium-oxide catalyst for producing biodiesel, as well as preparation method and application of zirconium-oxide catalyst

A technology of biodiesel and zirconia, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, biofuels, etc., can solve the problems of unfavorable environmental protection, waste of water resources, etc., and achieve strong reuse, high conversion rate, and structure stable effect

Active Publication Date: 2014-04-30
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Neutralization and water washing operations are also required after the reaction, which wastes precious water resources and is not conducive to environmental protection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Accurately weigh 1700g ZrO 2 , 180gAl 2 o 3 , 60gTiO 2 Powder, put into ball mill for 24h, add 400gNaCl, 170gNaHCO 3 Powder, using acidic silica sol as binder, mixed thoroughly, sent to granulator for granulation, dried at 120°C for 12 hours, transferred to high temperature muffle furnace for programmed temperature rise roasting, kept at 500°C for 1 hour to volatilize The low-temperature pore-forming agent removes the physically adsorbed water, and then rapidly raises the temperature to 1500°C for 100 minutes, so that the high-temperature pore-forming agent is completely volatilized, and ZrO is obtained after cooling 2 solid catalyst.

[0019] Take 1500g of ZrO 2 The solid catalyst is loaded in a tubular reactor, with eucalyptus oil as the raw material, the reaction temperature is controlled at 270°C, the reaction pressure is 10MPa, the volume ratio of alcohol to oil is 4:1, and the injection volume is 50L / h. Under these operating conditions, the biological The di...

Embodiment 2

[0021] Accurately weigh 1800g ZrO 2 , 160gAl 2 o 3 , 70gTiO 2 powder, put into ball mill for 24h, add 380gNaCl, 150gNaHCO 3 Powder, using acidic silica sol as binder, mixed thoroughly, sent to granulator for granulation, dried at 120°C for 12 hours, transferred to high temperature muffle furnace for programmed temperature rise roasting, kept at 500°C for 1 hour to volatilize The low-temperature pore-forming agent removes the physically adsorbed water, and then rapidly raises the temperature to 1600°C for 90 minutes to completely volatilize the high-temperature pore-forming agent, and obtain ZrO after cooling 2 solid catalyst.

[0022] Take 1500g of ZrO 2 The solid catalyst is loaded in a tubular reactor, using waste catering oil as raw material, the reaction temperature is controlled at 280°C, the reaction pressure is 13MPa, the volume ratio of alcohol to oil is 3:1, and the injection volume is 50L / h. Under these operating conditions, biodiesel The conversion rate was 97...

Embodiment 3

[0024] Accurately weigh 1640g ZrO 2 , 200gAl 2 o 3 , 70gTiO 2 Powder, put into ball mill for 24h, add 430gNaCl, 220gNaHCO 3 Powder, using acidic silica sol as binder, mixed thoroughly, sent to granulator for granulation, dried at 120°C for 12 hours, transferred to high temperature muffle furnace for programmed temperature rise roasting, kept at 500°C for 1 hour to volatilize The low-temperature pore-forming agent removes the physically adsorbed water, and then rapidly raises the temperature to 1700°C for 120 minutes to completely volatilize the high-temperature pore-forming agent, and obtain ZrO after cooling 2 solid catalyst.

[0025] Take 1500g of ZrO 2 The solid catalyst is loaded in a tubular reactor, with microalgae oil as the raw material, the reaction temperature is controlled at 280°C, the reaction pressure is 13MPa, the volume ratio of alcohol to oil is 5:1, and the injection volume is 50L / h. Under these operating conditions, biodiesel The conversion rate was 99...

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PUM

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Abstract

The invention discloses a zirconium-oxide catalyst for producing biodiesel, as well as a preparation method and an application of the zirconium-oxide catalyst. The zirconium-oxide catalyst comprises the following substances in percent by weight: 80%-95% of ZrO, 2%-18% of Al2O3, 1%-17% of TiO2, 5%-25% of NaHCO3, and 10%-50% of NaCl. The preparation method comprises the following steps: weighing the ZrO2, the Al2O3 and the TiO2, and carrying out ball milling for 24 hours, then adding the NaCl and the NaHCO3, adopting acid silica sol as a binding agent, mixing uniformly, granulating, forming, and drying for 12 hours at the temperature of 120 DEG C; maintaining the temperature for one hour at the temperature of 500 DEG C in a muffle furnace, then rising the temperature to 1460-1600 DEG C rapidly, roasting for 40-200 minutes and cooling. A pipe-type reactor is filled with the zirconium-oxide catalyst, wherein the reaction temperature is 250-300 DEG C, the reaction pressure is 7-14MPa and the alcohol-oil volume ratio is (0.5:1)-(7:1). The zirconium-oxide catalyst is good in heat stability, high in conversion rate, strong in repeated utilization and resistant in acid and water, and can be permanently used by one-time filling; under the resistance of a bed layer, the zirconium-oxide catalyst is stable in structure, not slimed, not easily blocked and very suitable for industrial production; loose pores are formed in the catalyst and in the surface of the catalyst, so that the catalyst has the extremely-high catalytic activity.

Description

technical field [0001] The invention belongs to the field of catalyst and preparation. Background technique [0002] Biodiesel is called "liquid solar energy" because of its good biodegradability, environmental friendliness and renewable properties, and is considered to be one of the most valuable liquid biomass energy sources. The production and research of biodiesel by chemical methods often requires the participation of catalysts to achieve the expected purpose of the reaction. The performance of the catalyst is directly related to whether the reaction can proceed smoothly, especially the easy product separation and high catalytic efficiency and repeatability. A good catalyst is the key to the industrial application of the preparation technology. However, at present, the homogeneous catalysts commonly used in the production of biodiesel in industry often have some difficult problems in the process of biodiesel production, which hinders its industrialization and applicati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06C11C3/10C10L1/02
CPCY02E50/10
Inventor 王允圃刘玉环刘仕涛阮榕生
Owner NANCHANG UNIV
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