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A kind of iron-based metal oxide catalyst and its preparation method and application

A catalyst and solid oxide technology, applied in the field of catalysis, can solve problems such as difficult control of co-precipitation process and washing process, time-consuming and labor-consuming, catalyst production failure, etc.

Inactive Publication Date: 2019-04-26
SHANGHAI BI KE CLEAN ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the above method is time-consuming and labor-intensive, the co-precipitation process and washing process are difficult to control, and the possibility of catalyst production failure is great. Therefore, it is necessary to develop a new method that can prepare catalysts with desired properties at high efficiency and low cost.

Method used

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  • A kind of iron-based metal oxide catalyst and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Weigh 1 mol iron nitrate, 0.5 mol zinc nitrate, 0.005 mol calcium nitrate, 0.002 mol copper nitrate, add them together into a high-speed pulverizer, mix and pulverize them at a speed of 25000r / min for 5 minutes, and the pulverized mixture Pour it out, dry it in an oven at 150°C to remove water for 3 hours, and obtain a mixed solid oxide, then add 100 grams of scallop powder, an appropriate amount of deionized water, and fully stir to obtain a mixed slurry with a solid content of 35% by mass . The resulting mixed slurry is input into the air-flow type spray drying granulator at a flow rate of 150 ml / min, the inlet temperature is 250° C., and the outlet temperature is 150° C. to obtain catalyst precursor microspheres, and then the catalyst precursor microspheres are transferred to In an infrared heater, it was dried at 120°C for 12 hours, then transferred to a muffle furnace, and calcined at 600°C for 10 hours to obtain a catalyst product. The catalyst particles have a p...

Embodiment 2

[0048] Weigh 1 mol iron nitrate, 0.6 mol magnesium nitrate, 0.005 mol manganese nitrate, 0.006 mol copper nitrate, add them together into a high-speed pulverizer, mix and pulverize them at a speed of 25000r / min for 5 minutes, and the pulverized mixture Pour it out, dry and remove water at 180°C for 2 hours to obtain a dry mixed solid oxide, add 100 grams of scallop powder and an appropriate amount of deionized water to it, and stir fully to obtain a mixed oxide with a solid content of 40% by mass. slurry. The resulting mixed slurry is input into the air-flow type spray drying granulator at a flow rate of 150 ml / min, the inlet temperature is 250° C., and the outlet temperature is 150° C. to obtain catalyst precursor microspheres, and then the catalyst precursor microspheres are transferred to In an infrared heater, it was dried at 120°C for 12 hours, then transferred to a muffle furnace, and calcined at 600°C for 10 hours to obtain a catalyst product. The catalyst particles ha...

Embodiment 3

[0050] Weigh 1 mol iron nitrate, 0.5 mol zinc nitrate, 0.005 mol calcium nitrate, 0.006 mol platinum nitrate, add them together into a high-speed pulverizer, mix and pulverize them at a speed of 25000r / min for 10 minutes, pour the pulverized mixture into drying at a temperature of 150° C. to remove water for 3 hours to obtain a dry mixed solid oxide, to which 100 grams of turnip powder and deionized water were added, and fully stirred to obtain a mixed slurry with a solid content of 40% by mass . The resulting mixed slurry is input into the air-flow type spray drying granulator at a flow rate of 150 ml / min, the inlet temperature is 250° C., and the outlet temperature is 150° C. to obtain catalyst precursor microspheres, and then the catalyst precursor microspheres are transferred to In an infrared heater, it was dried at 120°C for 12 hours, then transferred to a muffle furnace, and calcined at 600°C for 10 hours to obtain a catalyst product. The catalyst particles have a part...

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Abstract

The invention provides a solid oxide catalyst used for preparation of butadiene from butylene through oxidative dehydrogenation. The catalyst comprises oxides of the following elements: Fe, X, Y and Z, wherein X is one selected from a group consisting of Zn, Mg and Mo, Y is one selected from a group consisting of Ca, Mn, Ni and Co, Z is one selected from a group consisting of Pt and Cu, and on the basis of 100 parts of Fe in the catalyst by mol, the contents of X, Y and Z are 10 to 80 parts by mol, 0.1 to 5 parts by mol and 0.05 to 5 parts by mol. The invention also provides a preparation method for the catalyst and application of the catalyst in preparation of butadiene from butylene through oxidative dehydrogenation.

Description

technical field [0001] The invention relates to the field of catalysis, and more specifically, the invention relates to an iron-based catalyst for oxidative dehydrogenation of butene to prepare butadiene, as well as its preparation and application. Background technique [0002] As a basic petrochemical raw material, butadiene is second only to ethylene and propylene in petrochemical olefin raw materials. It is used for the production of styrene-butadiene rubber, butadiene rubber, nitrile rubber, ABS resin, SBS thermoplastic elastomer and One of the important raw materials for rubber resin industry products such as benzene resin. The output of butadiene has become an important symbol of the development level of the entire petrochemical industry. [0003] The industrial production methods of butadiene mainly include extractive distillation and dehydrogenation. The extractive distillation method refers to the extraction from the by-product mixed C4 fraction of the ethylene cr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/80B01J23/889B01J23/89B01J23/755B01J23/75C07C11/167C07C5/48
Inventor 王萌芮果徐焕辉甘永胜张小莽
Owner SHANGHAI BI KE CLEAN ENERGY TECH
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