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Paraffinic hydrocarbon shape selecting isomerization catalyst and method for producing the same

A catalyst and a technology for paraffin hydrocarbons, applied in the field of paraffin hydrocarbon shape-selective isomerization catalyst and preparation thereof, can solve problems such as no reports, and achieve the effects of high viscosity index, high product yield and low pour point

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

[0006] Molecular sieves modified by rare earth elements are widely used in petroleum refining catalysts. The introduction of rare earth elements can improve the acid distribution of molecular sieves and effectively improve the reaction performance of catalysts. Currently, rare earth modified Y zeolite and ZSM-5 are the most widely used. They are used in hydrocracking catalysts and shape-selective cracking reactions to obtain ideal results, but there is no report on the application of rare earth modified molecular sieves in paraffin isomerization.

Method used

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  • Paraffinic hydrocarbon shape selecting isomerization catalyst and method for producing the same

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Experimental program
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Embodiment 1

[0036] The preparation method of catalyst (E-1) of the present invention is as follows:

[0037] (1) ZSM-22 used in the present invention is prepared according to the method of Chinese Patent CN1565969A Example 1, and the obtained molecular sieve has a silicon-aluminum molar ratio of 92 and a specific surface area of ​​223m 2 / g, pore volume 0.21mL / g.

[0038] (2) with La(NO 3 ) 3 ·6H 2 O (produced by Beijing Chemical Plant, analytically pure) and water to prepare 2 o 3 Concentration by weight percentage is 10% aqueous solution, the molecular sieve 4500 grams that step (1) obtains is fully mixed with 5000 grams above-mentioned lanthanum-containing aqueous solution, at 110 ℃ of constant temperature 6 hours, 450 ℃ of constant temperature 6 hours, obtain La 2 o 3 Lanthanum-containing ZSM-22 with a content of 10% by weight.

[0039] (3) the lanthanum-containing molecular sieve (dry basis weight, hereinafter the same) obtained by 1500 gram step (2) and 500 gram (dry basis we...

Embodiment 2

[0042] The preparation method of catalyst (E-2) of the present invention is as follows:

[0043] The preparation method of the catalyst is the same as in Example 1, the difference is that the composition of the catalyst carrier is 20wt% modified ZSM-22 and 80wt% alumina, the content of platinum in the catalyst is 0.74wt%, and the drying and roasting conditions of the catalyst are: 110°C The catalyst was obtained at constant temperature for 4 hours at 420° C. and 6 hours at 420° C., and the catalyst number of the present invention was E-2.

Embodiment 3

[0045] The preparation method of catalyst (E-3) of the present invention is as follows:

[0046] The preparation method of catalyst is the same as embodiment 1, and difference is that used rare earth element compound is (NH 4 ) 2 Ce(NO3) 6 (produced by Beijing Chemical Plant, analytically pure), Ce in the cerium-containing solution used 2 o 3 The content is 2.0wt%, the hydrogenation component is palladium, and the palladium-containing compound used is palladium nitrate, wherein palladium is calculated as metal, and the solution concentration is 3wt%, so as to obtain catalyst E-3 of the present invention, and its composition and physicochemical properties are shown in Table 2 , and the evaluation results are shown in Table 3.

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Abstract

The invention discloses a paraffin hydrocarbon shape-selective isomerization catalyst and a preparation method thereof. The catalyst contains TON molecular sieves, inorganic refractory oxides and noble metal components, wherein the TON molecular sieves contain rare earth elements, and the weight content in the molecular sieves is 1%-20% in terms of oxides. In the preparation process of the catalyst, the rare earth element is first loaded on the molecular sieve to obtain the rare earth-containing molecular sieve, and then prepared into a catalyst. The catalyst is especially suitable for the hydrotreating process of lubricating oil fractions, and has the characteristics of high yield of target product, low pour point and high viscosity index.

Description

technical field [0001] The invention relates to a paraffin hydrocarbon shape-selective isomerization catalyst and a preparation method thereof. More specifically, it relates to a waxy raw material oil isomerization dewaxing catalyst and a preparation method thereof, which is especially suitable for the hydroisomerization dewaxing process of lubricating oil. Background technique [0002] The waxy feed oil mentioned in the present invention mainly includes diesel oil, AGO, VGO, white oil, hydrocracking tail oil and lubricating oil fractions, etc. Waxy raw oils, especially heavy distillate oils derived from paraffin-based crude oils, contain more waxes, have higher freezing points, and poor low-temperature fluidity. During storage, transportation, and use, the oil will Thickening, even solidification, thereby blocking the oil pipeline and interrupting the oil supply to the engine to cause engine failure. At present, there are many methods to solve various problems caused by s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G73/38C10G73/02B01J29/00
Inventor 刘全杰徐会青贾立明王刚王伟
Owner CHINA PETROLEUM & CHEM CORP
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