Hydrogenation catalyst with TiO2 as carrier of non-crystal Nib alloy

An amorphous alloy, hydrogenation catalyst technology, applied in metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, hydrogenation of aromatic hydrocarbons, etc., can solve the problem of catalyst activity and mechanical strength development, etc. to solve the problem of sulfur poisoning and achieve the effect of good sulfur resistance

Inactive Publication Date: 2002-09-18
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current amorphous alloy hydrogenation catalyst is mainly based on SiO 2 、Al 2 o 3 As the carrier, the active components of the supported amorphous alloys are NiB and NiP, but these catalysts still need further development in terms of activity and mechanical strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] TiO at 450°C 2 Carrier pretreatment for 4 hours, weigh 5gTiO 2 , slowly add 11.1ml of 1.3MNi(NO 3 ) 2 solution, stirred for 4 hours, filtered, and the filtrate was added to 11.1ml of distilled water, and 2MKBH was added dropwise at 0°C under nitrogen protection and vigorous stirring 4 The solution is 18.55ml, drop it within 15min; when no gas is generated, filter, wash the filter cake with a large amount of distilled water until neutral, then wash with absolute ethanol, and finally store it in absolute ethanol, and dry the catalyst in the shade before use , tableting, crushing, sieving.

[0018] The reaction of the present invention adopts a benzene hydrogenation and thiophene HDS reaction device combined with pulse micro-reaction-gas chromatography. Measure 1ml of the above-mentioned dried catalyst into the reactor; pulse benzene hydrogenation reaction conditions: the carrier gas is hydrogen, the flow rate is 50ml / min, and it is reduced at 140°C for 1h under hydrog...

Embodiment 2

[0022] With the catalyst prepared in embodiment 1 and Al 2 o 3 Mechanical grinding and mixing, adding Al 2 o 3 The weight percentage composition is respectively 20%, 30%, 40% and 50%, and all the other are all the same as embodiment 1.

Embodiment 3

[0024] TiO 2 The impregnation and drying process of the powder is the same as that of the comparative example, then add 18mlH 2 O, add 2M KBH dropwise under nitrogen protection and vigorous stirring at 0°C 4 33.45ml, drop within 20 minutes. All the other processing conditions and reaction conditions are with embodiment 1. The yield and selectivity of cyclohexane and the limit sulfur resistance are shown in Table 2, and the yield and selectivity of n-butane are shown in Table 3.

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Abstract

A hydrogenation catalyst contains carrier of TiO2 and active component of non-crystal NiB alloy (5.26 wt.%) and rare-earth elements (1 wt.%). Said catalyst has very high low-temp activity and near 100% of selectivity for hydrogenating arylhydrocarbon and the activity of hydrogenation desulfurization (HDS). It can be used for hydrorefining oil.

Description

technical field [0001] The present invention belongs to TiO 2 Catalyst supporting NiB amorphous metal alloy, its preparation method and application in hydrogenation reaction. Background technique [0002] Amorphous alloys are a class of materials with short-range order and long-range disorder in atomic arrangement. Since 1960, Duwez et al. have prepared amorphous alloys for the first time by melt quenching. Since then, a more economical and simple chemical reduction method has been developed, which can be used to prepare ultrafine amorphous alloys (UFAAP). Since the 1980s, the excellent catalytic performance of amorphous metal alloys has gradually attracted the attention of the academic community. Since Smith presented the first paper using amorphous alloys as catalysts at the Seventh International Conference on Catalysis, research in this area has been very active. However, when amorphous metal alloys are used as catalysts, two key issues need to be solved, one is how t...

Claims

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Application Information

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IPC IPC(8): B01J23/755B01J23/83C10G45/48
Inventor 李伟陶克毅程庆彦关乃佳沈炳龙沈燕君
Owner NANKAI UNIV
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