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Preparation of a supported nickel-based catalyst and its application in catalytic hydrogenation of C5/C9 petroleum resin

A catalyst and supported technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, etc., can solve the problem of small external specific surface area, large nickel active component particles, Solve the problems of low hydrogenation degree of unsaturated hydrocarbon bonds in petroleum resin, and achieve high hydrogenation conversion rate, long service life and high dispersion

Active Publication Date: 2021-06-22
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN 104941649A adopts the traditional impregnation method to prepare Ni-SiO with a nickel loading of 30-50 wt.%. 2 Supported catalyst, the softening point of hydrogenated petroleum resin decreases slightly, but the bromine price is higher (>1 gBr 2 / 100 g), because the traditional impregnation method to prepare high-loaded catalysts is likely to cause uneven distribution of nickel active components, and the phenomenon that nickel active components are larger due to aggregation, resulting in the inability of some active centers to play their catalytic role
Liu Weixing et al. (“Ni / SiO 2 The influence of catalyst preparation conditions on the catalytic hydrogenation reaction performance of C5 resin", "China Petroleum and Chemical Standards and Quality", 2014, 2, 31-31.) Ni / SiO prepared by co-precipitation method 2 The active components of the catalyst are evenly dispersed, but the overall structure is compact, the external specific surface area is small, and the number of pores is less exposed, which limits the contact between the reactant molecules and the active center, resulting in a low degree of hydrogenation of the unsaturated hydrocarbon bonds of the petroleum resin.

Method used

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  • Preparation of a supported nickel-based catalyst and its application in catalytic hydrogenation of C5/C9 petroleum resin
  • Preparation of a supported nickel-based catalyst and its application in catalytic hydrogenation of C5/C9 petroleum resin
  • Preparation of a supported nickel-based catalyst and its application in catalytic hydrogenation of C5/C9 petroleum resin

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Experimental program
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Effect test

Embodiment 1

[0041] Take 0.2g SiO 2 Add to 50 ml deionized water, ultrasonically disperse for 40 min to form solution A, weigh 0.25 gNiCl 2 •6H 2 O, 0.02 g CuCl 2 • 2H 2 O was dissolved in 40 ml of deionized water, 2 ml of 25-28 vol% ammonia solution (the molar ratio of ammonia to silica was 6:1) was added dropwise, and 0.5 g of NH 4 After Cl, stir for 5 min to obtain metal ammonia solution B, add solution B to solution A and continue stirring for 5 min, then transfer to a stainless steel reaction kettle with polytetrafluoroethylene lining, and place it in an oven at 150 °C for 12 After h, cool to room temperature, filter under reduced pressure and wash with deionized water and ethanol several times, and then dry in an oven at 70 °C to constant weight to obtain a green powder, which is placed in a tube furnace under a reducing atmosphere at 850 °C Reduction at lower temperature for 6 h, the supported nickel-based catalyst Ni-Cu-SiO 2 .

[0042] Take 3.5g (2.5 ml) of the 20-40 mesh ca...

Embodiment 2

[0047] Take 0.2g SiO 2 Add it into 50 ml deionized water, ultrasonically disperse for 40 min to form solution A, weigh 0.3 gNi(NO 3 ) 2 •6H 2 O, 0.02 g Co(NO 3 ) 2 • 2H 2 O was dissolved in 40 ml deionized water, 1.5 ml, 25-28 vol% ammonia solution (molar ratio of ammonia to silica was 5:1) was added dropwise, and 0.5 g NH 4 After Cl, stir for 5 min to obtain metal ammonia solution B, add solution B to solution A and continue stirring for 5 min, then transfer to a stainless steel reaction kettle with polytetrafluoroethylene lining, and place it in an oven at 120 °C for 10 After h, cool to room temperature, filter under reduced pressure and wash with deionized water and ethanol several times, and then dry in an oven at 70 °C to constant weight to obtain a green powder, which is placed in a tube furnace under a reducing atmosphere at 800 °C Reduction at lower temperature for 6 h, the supported nickel-based catalyst Ni-Co-SiO 2 .

[0048] Take 3.5g (2.5 ml) of the 20-40 m...

Embodiment 3

[0050] Take 0.2g SiO 2 Add it into 50 ml deionized water, ultrasonically disperse for 40 min to form solution A, weigh 0.25 g Ni(OAC) 2 •6H 2 O, 0.02 g Mg(NO 3)2 • 2H 2 O was dissolved in 40 ml deionized water, 1.0 ml, 25-28 vol% ammonia solution (molar ratio of ammonia to silica was 3:1) was added dropwise, and 0.5 g NH 4 After Cl, stir for 5 min to obtain metal ammonia solution B, add solution B to solution A and continue stirring for 5 min, then transfer to a stainless steel reaction kettle with polytetrafluoroethylene lining, and place it in an oven at 120 °C for 10 After h, cool to room temperature, filter under reduced pressure and wash with deionized water and ethanol several times, and then dry in an oven at 70 °C to constant weight to obtain a green powder, which is placed in a tube furnace under a reducing atmosphere at 800 °C Reduction at lower temperature for 6 h, the supported nickel-based catalyst Ni-Mg-SiO 2 .

[0051] Take 3.5g (2.5 ml) of the above-prepa...

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Abstract

The invention discloses a supported nickel-based catalyst and its preparation and its application in catalytic hydrogenation of C5 / C9 petroleum resin. The catalyst is based on SiO 2 Mesoporous hollow nanosphere catalyst Ni‑M‑SiO prepared as a support, Ni as the main active metal center, and additive metal M (M=Cu / Co / Mg) 2 , which has a large specific surface area, small active metal particle size, uniform dispersion, strong binding force with the carrier, and is not easy to be lost and agglomerated during the reaction process. The catalyst is applied to the hydrogenation reaction of C5 / C9 petroleum resin, which not only has high catalytic hydrogenation activity and decolorization performance, but also can effectively inhibit the significant decrease of softening point, and is suitable for the preparation of high-quality hydrogenated petroleum resin , the bromine value of the obtained product is low (<1.2 gBr 2 / 100g); light color (Gardner color <0.6); high softening point (>84°C).

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, and in particular relates to a supported nickel-based catalyst and its preparation and application in catalytic hydrogenation of C5 / C9 petroleum resins. Background technique [0002] Petroleum resin is a kind of thermoplastic resin produced by polymerizing the by-product distillate oil in the cracking ethylene production process. It is widely used in coatings, rubber additives, printing and other industries, but at the same time, petroleum resin contains A large number of impurities such as unsaturated hydrocarbon bonds and halogen elements make petroleum resins have disadvantages such as dark hue, pungent smell, poor adhesion, light and thermal stability, and poor oxidation stability, which limits its application in high-precision fields. [0003] Hydrogenated petroleum resin is a special material with excellent performance obtained by catalytic hydrogenation of unsaturated C=C doub...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/755B01J35/10B01J35/08C01B33/12C08F240/00C08F8/04
CPCB01J23/755C01B33/12C08F8/04C01P2004/32B01J35/51B01J35/633B01J35/615C08F240/00
Inventor 袁珮杨江涛鲍晓军朱海波王廷海岳源源崔勍焱白正帅
Owner FUZHOU UNIV