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Non-precious metal catalyst for preparing liquefied petroleum gas and preparation method of non-precious metal catalyst for preparing liquefied petroleum gas

A technology of liquefied petroleum gas and non-precious metal, which is applied in the field of non-precious metal catalyst for dimethyl ether conversion and its preparation, can solve the problem of high preparation cost, and achieve the effects of reducing the generation of by-products, improving the selectivity, and slowing down carbon deposition

Active Publication Date: 2017-02-15
BEIJING GAOXIN LIHUA TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, the catalyst used in the production of liquefied petroleum gas is a noble metal Pd / ZSM-5 catalyst, and the preparation cost is high.

Method used

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  • Non-precious metal catalyst for preparing liquefied petroleum gas and preparation method of non-precious metal catalyst for preparing liquefied petroleum gas
  • Non-precious metal catalyst for preparing liquefied petroleum gas and preparation method of non-precious metal catalyst for preparing liquefied petroleum gas

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Weigh 12.3871gNi(NO 3 ) 2 . 6H 2 O, 9.5043gCu(NO 3 ) 2 . 3H 2 O, add 70mL deionized water, stir to dissolve, and weigh 50g SiO 2 / Al 2 o 3 The Hβ molecular sieve with a molar ratio of 25 was placed in a beaker, and the prepared solution was slowly added into the beaker while stirring continuously. Stir and impregnate in a constant temperature water bath at 50°C for 3h, then introduce ultrasonic impregnation for 3h, the ultrasonic frequency is 22kHz, put the impregnated catalyst in an oven, dry at 120°C for 4h, and finally roast at 450°C for 4h. 20-40 mesh.

[0042] The activity of the catalyst was evaluated by using two-stage reactors connected in series. Catalyst for industrial methanol synthesis and γ-Al 2 o 3 Take 20-40 mesh by crushing and sieving, weigh 0.5g each, mix evenly and load it into the first-stage reactor; weigh 1g catalyst and load it into the second-stage reactor. The first stage catalyst uses Cu-Zn-Al 2 o 3 / γ-Al 2 o 3 Mixed catalyst,...

Embodiment 2

[0045] The specific implementation process is roughly the same as that of Embodiment 1, except that the ultrasonic frequency is 32kHz.

[0046] The reaction result in this state is recorded as Cat2, see Table 1 and Table 2 for details.

Embodiment 3

[0048] The specific implementation process is roughly the same as that of Embodiment 1, except that the ultrasonic frequency is 42kHz.

[0049] The reaction result in this state is recorded as Cat3, see Table 1 and Table 2 for details.

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Abstract

The invention discloses a non-precious metal catalyst for preparing synthesized liquefied petroleum gas and a preparation method of the non-precious metal catalyst. The non-precious metal catalyst comprises Ni, Cu and Hbeta molecular sieves. The preparation method includes preparing a mixed solution containing Cu and Ni, adding the mixed solution into Hbeta molecular sieve powder, performing stirring impregnation prior to ultrasonic impregnation, drying, roasting and forming so as to obtain the non-precious metal catalyst. The non-precious metal catalyst is applicable to the second stage of preparing the liquefied petroleum gas by a synthesis-gas two-step method and is high in selectivity and active stability as compared with a precious metal catalyst.

Description

technical field [0001] The invention relates to a catalyst for preparing liquefied petroleum gas from synthesis gas and a preparation method thereof, in particular to a non-precious metal catalyst used in the second stage of a two-stage synthesis process for preparing liquefied petroleum gas, that is, for dimethyl ether conversion and its preparation method. Background technique [0002] Liquefied Petroleum Gas (LPG) is the general term for propane and butane. It contains a small amount of propylene and butene. It is an environmentally friendly fuel and is widely used as clean fuel for motor vehicles, industrial, agricultural and household fuel, and raw materials for chemical production. At present, liquefied petroleum gas mainly comes from associated gas in oil and gas fields and cracked gas in the process of petroleum refining. [0003] At present, the fuel consumed in the world and the raw materials required for chemical production mainly depend on petroleum. In recent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755C10L3/12
CPCB01J23/755B01J37/0201B01J37/343C10L3/12
Inventor 张谦温赵明杨振孙锦昌杨大奎
Owner BEIJING GAOXIN LIHUA TECH CO LTD
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