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Platinum-based catalyst, preparation method and application thereof, and preparation method for propylene

A catalyst and platinum-based technology, which is applied in the field of platinum-based catalysts and their preparation, can solve the problems of complex preparation process, long preparation time, and poor dispersion of catalyst active components, etc. Simple, evenly dispersed effect

Inactive Publication Date: 2014-12-24
SHANGHAI DINGJIDE IND TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the defects of existing platinum-based catalysts, such as complex preparation process, long preparation time, and poor dispersion of active components of the catalyst, to provide a platinum-based catalyst and its preparation method, application and The preparation method of propylene

Method used

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  • Platinum-based catalyst, preparation method and application thereof, and preparation method for propylene
  • Platinum-based catalyst, preparation method and application thereof, and preparation method for propylene
  • Platinum-based catalyst, preparation method and application thereof, and preparation method for propylene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) Weigh 0.0341g of SnCl 2 2H 2 Dissolve O in 2.4mL deionized water to make a solution, and weigh 3g of γ-Al at the same time 2 o 3 Add the above solution. Then put it into an ultrasonic instrument, adjust the water temperature to 40°C, and ultrasonically vibrate for 2 hours. The sonicated samples were dried in an oven at 110° C. for 2 hours. Finally, the dried sample was placed in a muffle furnace at a rate of 2°C / min to 500°C, baked in air for 5 hours, and cooled to room temperature.

[0050] (2) Dissolve 2.4mL of 0.01g / mL chloroplatinic acid solution in the calcined sample, put it into the ultrasonic instrument, adjust the water temperature to 40°C, and turn on the ultrasonic vibration for 2 hours. The sonicated samples were dried in an oven at 110° C. for 2 hours. Finally, the dried sample was placed in a muffle furnace at a rate of 2°C / min to 500°C, baked in air for 5 hours, and cooled to room temperature.

[0051] Catalyst Cat#1 was produced.

[0052] Pla...

Embodiment 2

[0061] (1) Weigh 0.0499g of In(NO 3 ) 3 4.5H 2 Dissolve O in 2.4mL deionized water to make a solution, and weigh 3g of γ-Al at the same time 2 o 3 Add the above solution. Then put it into an ultrasonic instrument, adjust the water temperature to 40°C, and ultrasonically vibrate for 1 hour. The sonicated samples were dried in an oven at 150°C for 2 hours. Finally, the dried sample was placed in a muffle furnace at a rate of 10 °C / min to 700 °C, baked in air for 1 hour, and cooled to room temperature.

[0062] (2) Dissolve 2.4mL of 0.01g / mL chloroplatinic acid solution in the calcined sample, put it into an ultrasonic instrument, adjust the water temperature to 40°C, and oscillate ultrasonically for 6 hours. The sonicated samples were dried in an oven at 110° C. for 2 hours. Finally, the dried sample was placed in a muffle furnace at a rate of 2°C / min to 500°C, baked in air for 5 hours, and cooled to room temperature.

[0063] Catalyst Cat#2 was produced.

[0064] Plati...

Embodiment 3

[0072] (1) Weigh 0.0998g of In(NO 3 ) 3 4.5H 2 Dissolve O in 2.4mL deionized water to make a solution, and weigh 3g of γ-Al at the same time 2 o 3 Add the above solution. Then put it into an ultrasonic instrument, adjust the water temperature to 30°C, and ultrasonically vibrate for 6 hours. The sonicated samples were dried in an oven at 110° C. for 2 hours. Finally, the dried sample was placed in a muffle furnace at a rate of 5 °C / min to 500 °C, baked in air for 5 hours, and cooled to room temperature.

[0073] (2) Dissolve 2.4mL of 0.01g / mL chloroplatinic acid solution in the calcined sample, put it into an ultrasonic instrument, adjust the water temperature to 40°C, and oscillate ultrasonically for 1 hour. The sonicated samples were dried in an oven at 100°C for 2 hours. Finally, the dried sample was placed in a muffle furnace at a rate of 2°C / min to 500°C, baked in air for 5 hours, and cooled to room temperature.

[0074] Catalyst Cat#3 was produced.

[0075] Plati...

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Abstract

The invention discloses a platinum-based catalyst, a preparation method and an application thereof, and a preparation method for propylene. The preparation method of the platinum-based catalyst comprises the following steps of (1) mixing activated aluminium oxide with an auxiliary agent solution uniformly to obtain a mixed solution, vibrating for 1-6 hours under ultrasonic assistant at a temperature of 30-50 DEG C, drying and calcining to obtain a precursor, wherein the auxiliary agent solution is a stannous chloride solution and / or indium nitrate solution and a mass ratio of activated aluminium oxide to the auxiliary agent is (10:1)-(450:1); and (2) mixing the precursor with a chloroplatinic acid solution uniformly, vibrating for 1-6 hours under ultrasonic assistant at a temperature of 30-50 DEG C, drying and calcining, wherein a mass ratio of activated aluminium oxide to chloroplatinic acid is (40:1)-(500:1). The preparation method is simple in process and short in time; the prepared platinum-based catalyst can catalyze propane dehydrogenation to prepare propylene; active components are uniformly dispersed on carrier surfaces; and the prepared platinum-based catalyst has relatively high activity, propylene selectivity and stability.

Description

technical field [0001] The invention relates to a platinum-based catalyst, its preparation method, application and the preparation method of propylene. Background technique [0002] Propylene is the basic chemical raw material of the three major synthetic materials, mainly used in the production of acrylonitrile, isopropylene, acetone and propylene oxide. Therefore, the demand for propylene in the world today shows a trend of rapid growth. The traditional supply of propylene mainly comes from petroleum cracking to produce ethylene and the by-products of petroleum catalytic cracking process, and its output cannot meet the market demand. It is a trend to expand the source of propylene. The process of propane dehydrogenation to propylene has aroused great interest. At the end of the last century, the process of propane catalytic dehydrogenation to propylene was developed. At present, the industrialized processes mainly include Oleflex process (propane dehydrogenation process d...

Claims

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Application Information

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IPC IPC(8): B01J23/62C07C11/06C07C5/333
CPCY02P20/52
Inventor 张辉赵欣刘学郭亚军
Owner SHANGHAI DINGJIDE IND TECH CO LTD
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