Previous metal modified catalyst for fischer-tropsch synthesis and preparation method thereof

A Fischer-Tropsch synthesis, precious metal technology, applied in the preparation of liquid hydrocarbon mixtures, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve the problem of high cost

Inactive Publication Date: 2016-08-10
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of the Fischer-Tropsch synthesis catalyst is relatively high; in addition, the Fischer-Tropsch synthesis Co-based catalyst has higher requirements on the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) The preparation method of the noble metal modified catalyst for Fischer-Tropsch synthesis, comprising the following steps:

[0050] (1) Raw material preparation

[0051] The sum of the mass percentages of the noble metal modified catalyst components is 100%, wherein

[0052] Cobalt nitrate 25%,

[0053] Ruthenium chloride 0.15%,

[0054] Zirconium nitrate 1.6%,

[0055] The balance is catalyst support.

[0056] (2) Treatment of catalyst carrier

[0057] ① Preparation of catalyst carrier

[0058] A) Preparation of silicon oxide

[0059] Mix acidic silica sol (34wt% silica) with zirconium nitrate solution, the mass ratio of which is silica:zirconium is 100:0.8, stir for 30 minutes, dry at 110°C for 24 hours, and pulverize to below 200 mesh for later use.

[0060] B) Preparation of plastic bodies

[0061] The sum of the mass percentages of plastic body components is 100%, wherein:

[0062] Silicon oxide 80%;

[0063] Silica sol 10%;

[0064] Pseudoboehmite 3...

Embodiment 2

[0089] (1) The preparation method of the noble metal modified catalyst for Fischer-Tropsch synthesis, comprising the following steps:

[0090] (1) Raw material preparation

[0091] The sum of the mass percentages of precious metal modified catalyst components is 100%, wherein:

[0092] Cobalt nitrate 25%;

[0093] Ruthenium chloride 0.15%;

[0094] Lanthanum nitrate 0.2%;

[0095] The balance is catalyst support.

[0096] (2) Treatment of catalyst carrier

[0097] ① Preparation of catalyst carrier

[0098] A) Preparation of silicon oxide

[0099] The acidic silica sol (34wt% silicon oxide) was kept at 110°C for 24 hours at a constant temperature, and crushed to below 200 mesh for later use.

[0100] B) Preparation of plastic bodies

[0101] The sum of the mass percentages of plastic body components is 100%, wherein:

[0102] Silicon oxide 80%;

[0103] Silica sol 10%;

[0104] Pseudoboehmite 2%;

[0105] Sesame powder 1.5%;

[0106] The balance is deionized water....

Embodiment 3

[0125] (1) The preparation method of the noble metal modified catalyst for Fischer-Tropsch synthesis, comprising the following steps:

[0126] (1) Raw material preparation

[0127] The sum of the mass percentages of precious metal modified catalyst components is 100%, wherein:

[0128] Cobalt nitrate 10%;

[0129] Ruthenium chloride 0.05%;

[0130] Zirconium nitrate 0.8%;

[0131] The balance is catalyst support.

[0132] (2) Treatment of the catalyst carrier (same as in Example 1).

[0133] (3) Modified catalyst carrier

[0134] ① (same as embodiment 1).

[0135] ② Weigh the catalyst carrier treated in step (2) according to the mass fraction of step (1); treat the catalyst carrier with a certain concentration of ammonium nitrate solution at 80°C for 2 hours, filter and wash repeatedly with deionized water for later use.

[0136] (4) dry

[0137] Put the catalyst carrier impregnated in step (3) into an oven at 120° C. for 12 hours to dry.

[0138] (5) Roasting

[013...

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PUM

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Abstract

The invention provides a previous metal modified catalyst for fischer-tropsch synthesis and a preparation method thereof .Silicon oxide serves as a catalyst carrier, cobalt serves as an active ingredient, zirconium and lanthanum serve as carrier modified auxiliaries, rhenium, ruthenium, rhodium and platinum serve as precious metal auxiliaries, and the mass percentage of the components is 100%; the active ingredient accounts for 10-40%; the carrier modified auxiliaries account for 0.2-3.2%; the precious metal auxiliaries account for 0.05-2.0%; the balance is the catalyst carrier .The preparation method of the precious metal modified catalyst includes the following steps of 1 preparation of raw materials; 2, processing of the catalyst carrier; 3, modification of the catalyst carrier; 4, drying; 5, calcination; 6, preparation of the catalyst, and the previous metal modified catalyst is obtained .The previous metal modified catalyst has important use significance and is high in selectivity, high in stability, high in additional value, high in mechanical strength, small in catalyst damage rate and long in service life, the preparation method which is reasonable in step and convenient to operate is provided, and industrialized production prospect is achieved.

Description

technical field [0001] The invention relates to the technical field of catalyst preparation, and relates to a preparation method and molding technology of an industrial catalyst carrier, in particular to a noble metal modified catalyst for synthesizing heavy hydrocarbons from synthesis gas Fischer-Tropsch and a preparation method thereof. Background technique [0002] Syngas (H 2 / CO) The method of synthesizing liquid hydrocarbons by catalytic reaction is called "Fischer-Tropsch Synthesis". Fischer-Tropsch synthesis technology and the subsequent product refining process can convert synthesis gas into clean fuels and other high value-added chemical raw materials and products on a large scale, and synthesis gas can be derived from coal, natural gas, shale gas, coal bed methane, Catalytic conversion technology of raw materials such as biomass. As the world's petroleum resources are increasingly shrinking, this path of non-petroleum technology to synthesize bulk chemical raw m...

Claims

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Application Information

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IPC IPC(8): B01J23/89B01J23/889C10G2/00
CPCB01J23/002B01J23/8896B01J23/8913B01J23/894B01J23/8986B01J2523/00C10G2/332C10G2/333C10G2300/70B01J2523/41B01J2523/48B01J2523/821B01J2523/845B01J2523/3706B01J2523/74B01J2523/828B01J2523/822
Inventor 应卫勇张海涛黄健吕志新李勇征费妮娜马宏方钱炜鑫
Owner EAST CHINA UNIV OF SCI & TECH
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