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Nano hydrogenation catalysts composition and method of producing the same

A technology of hydrogenation catalyst and composition, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc. issues such as narrow scope

Active Publication Date: 2008-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the pore distribution of the catalyst, the pores in the range of 1.0-2.5nm account for 72%, which is not a mesoporous material, and the scope of application is narrow, which is caused by the shortcomings of the method itself
The nanoparticles prepared by the sol-gel method are about 5 nanometers, and the pore diameter is mostly in the range of 1 to 3 nanometers. It is characterized by high specific surface area and large pore volume, and its serious disadvantage is that the pore diameter is too small. This is also a sol-gel method. The fundamental reason why the catalyst carrier prepared by gel method cannot be used in petrochemical industry
In addition, because the particle size of nano-titanium-silicon composite oxide particles prepared by the sol-gel method is too small, the surface energy is high, and the particles are easily agglomerated.

Method used

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  • Nano hydrogenation catalysts composition and method of producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Mix 62g of second-line oil and 8g of SP-80, heat to dissolve at 80°C, and mix well; heat 300g of aluminum nitrate nonahydrate and 20g of nickel nitrate to melt at 80°C, add dropwise to the above mixture, and mix for 15 minutes to form a uniform superincrease Sol body, 114g titanium tetrachloride, 43g molybdenum pentachloride and 150g ethanol solution are added in above-mentioned micelle, and finally dropwise add the ammoniacal liquor 303g that weight concentration is 41% reaction 2 hours, aging 10 hours, obtains the hydrogenation catalyst of nanobody phase gel. The nano-hydrogenation catalyst gel was calcined at 300°C for 2 hours in a nitrogen atmosphere, and 550°C in a nitrogen atmosphere for 8 hours to obtain the nano-hydrogenation catalyst of this example. Its properties are as follows: BET specific surface: 320m 2 / g, pore volume: 0.52ml / g, average pore diameter: 12nm, average particle diameter: 32nm, pore volume with a pore diameter of 4-20nm accounts for 80% of th...

Embodiment 2

[0063] 52g minus four-line oil, 5g light deasphalted oil, 1g SP-60 and 2g lecithin were heated and dissolved at 100°C, and mixed uniformly; 505g aluminum nitrate nonahydrate, 180g silica sol (wherein containing silicon dioxide was 30wt%) , 90g of molybdenum tetrachloride and 55g of nickel sulfate were heated to 100°C to melt, added dropwise to the above mixture, and mixed for 30 minutes to form a uniform supersolubilized gel group. Under airtight conditions, 110g of ammonia gas was added to the above system at 100°C , carry out the precipitation reaction, and then aging for 20 hours to obtain the nanometer hydrogenation catalyst gel. The gel was calcined at 280°C for 2.5 hours by air, and then calcined at 580°C for 10 hours to obtain the nano hydrogenation catalyst gel of this example. Its properties are as follows: BET specific surface: 260m 2 / g, pore volume: 0.44ml / g, average pore diameter: 8nm, average particle diameter: 25nm, pore volume with a pore diameter of 4-20nm acc...

Embodiment 3

[0065] Heat and dissolve 265g of common three-line oil, 35g of minus three-line wax paste, 80g of polyisobutenyl diethylene glycol maleate, and 20g of tall oil amide at 120°C; mix 248g of aluminum chloride hexahydrate, 114g of titanium tetrachloride , 208g of urea, 20g of molybdenum trichloride hexahydrate and 10g of nickel nitrate were mixed and heated to 120°C for melting, added dropwise to the above mixture, and mixed for 20 minutes to form a uniform supersolubilized micelle. Seal the reactor, react at 80° C. for 4 hours, and age for 5 hours to obtain a nanobody phase hydrogenation catalyst gel. Blow the gel into air at 250°C for 2 hours, and then at 600°C for 5 hours to obtain the nano hydrogenation catalyst of this example, its properties are as follows: BET specific surface: 200m 2 / g, pore volume: 1.1ml / g, average pore diameter: 15nm, average particle diameter: 21nm, pore volume with a pore diameter of 4-20nm accounts for 92% of the total pore volume.

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Abstract

The invention discloses nano-composite hydrogenation catalyst composition and a preparation method thereof. The catalyst composition includes active metal oxide and the composition of porous melt-resistant inorganic oxide. By utilizing the property that the precursors of the melt-resistant inorganic oxide, promoter oxide and the active metal oxide can form super-solubility nanometre micelle under the existence of surfactant with the VB value less than 1 and hydrocarbon composition, the invention facilitates the precursors and the hydroxide formed by precipitant to be in situ synthesized inside a micelle, so as to avoid the augment of the particle diameter of the oxide, and to facilitate the particle diameter to be in a single dispersed state. The catalyst of the invention has high specific surface area, large pore volume, large pore diameter, wide application range and good activity stability. The method of the invention has the advantages that the nano particle diameter is easy to be controlled, the distribution range of the particle diameter is narrow and the proportion of the carrier and the active component can be adjusted. The amount of the surfactant and the hydrocarbon component used for the method of the invention is less, and the cost is low.

Description

technical field [0001] The invention relates to a hydrogenation catalyst and a preparation method thereof, in particular to a nanoscale composite hydrogenation catalyst composition and a preparation method thereof. Background technique [0002] As an important process in petroleum refining and synthetic ammonia production using petroleum as raw material, hydrodesulfurization has always been valued by people. However, in recent years, the quality of petroleum has become heavier and worse, while the quality of products has become more stringent, and the requirements for feed materials in subsequent processes have become more and more stringent. In addition, since mankind entered the 21st century, people's awareness of environmental protection has been continuously enhanced, and environmental protection legislation has become more and more stringent. x , SO x And the restrictions on aromatics content are more stringent. In the early 1990s, the sulfur content of the European ...

Claims

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Application Information

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IPC IPC(8): B01J23/883B01J35/02C10G45/08
Inventor 王鼎聪刘纪端孙万富赵愉生杨刚王永林付秋红
Owner CHINA PETROLEUM & CHEM CORP
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