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Catalyst for poly-alpha-olefin synthetic oil and preparation method for catalyst

A technology of olefin synthesis oil and catalyst, which is applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., to achieve the effects of good quality, easy process operation, and high yield

Active Publication Date: 2017-06-23
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few reports on catalysts for the direct polymerization of branched α-olefins to prepare high viscosity index PAOs

Method used

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  • Catalyst for poly-alpha-olefin synthetic oil and preparation method for catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 8g silica (pore volume is 0.50cm 3 / g, the average pore diameter is 2.0nm, and the specific surface area is 158m 2 / g) impregnated in an aqueous solution of vanadium nitrate (V load is 0.20wt%), continuously stirred and impregnated in a water bath at 25°C for 30min, filtered, and dried in vacuum at 100°C for 6h; the silica carrier impregnated with vanadium nitrate was placed in a muffle For roasting in the furnace, the temperature was first raised to 120°C and kept at a constant temperature for 2 hours, then the temperature was raised to 350°C and kept at a constant temperature for 1 hour, then the temperature was further raised to 450°C and kept at a constant temperature for 6 hours, and finally the temperature was naturally lowered and cooled under nitrogen. The obtained sample was impregnated again in a toluene solution of aluminum trichloride (12.00wt% Al loading), impregnated with continuous stirring at room temperature for 2 hours, and vacuum-dried at 100°C for 6 ...

Embodiment 2

[0039] 8g silica (pore volume is 0.58cm 3 / g, the average pore diameter is 12.5nm, and the specific surface area is 100m 2 / g) impregnated in an aqueous solution of vanadyl oxalate (V loading capacity is 0.58wt%), continuously stirred and impregnated in a water bath at 45°C for 50min, filtered, and dried in vacuum at 100°C for 6h; the silica carrier impregnated with vanadyl oxalate was placed on Roasting in the muffle furnace, the temperature was first raised to 120°C, kept at a constant temperature for 2 hours, then raised to 350°C, held at a constant temperature for 1 hour, continued to be heated to 450°C, held at a constant temperature for 6 hours, and finally cooled naturally under nitrogen. The obtained sample was impregnated again in an isopropanol solution of titanium tetrachloride (Ti loading was 10.68wt%), impregnated with continuous stirring at room temperature for 2 hours, and vacuum-dried at 100°C for 6 hours to obtain a catalyst for storage until use.

Embodiment 3

[0041] 10g of aluminum oxide (γ-alumina, the pore volume is 1.34cm 3 / g, the average pore diameter is 20nm, and the specific surface area is 220m 2 / g) impregnated in chromium acetate aqueous solution (Cr loading capacity is 12.00wt%), continuously stirred and impregnated in 25°C water bath for 60min, filtered, and dried in vacuum at 100°C for 6h; the aluminum oxide carrier impregnated with chromium acetate was placed in Roasting in the Fu furnace, first raise the temperature to 120°C, keep the temperature for 2h, then raise the temperature to 350°C, keep the temperature for 1h, continue to raise the temperature to 550°C, keep the temperature for 6h, and finally cool down naturally under nitrogen to 200-300°C, and introduce reducing Gas CO lasts for 1-3 hours to reduce the contained chromium oxides to low-priced chromium oxides. The obtained sample was impregnated again in an isopropanol solution of titanium tetrachloride (Ti loading was 0.10wt%), impregnated with continuous ...

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Abstract

The invention relates to a catalyst for poly-alpha-olefin synthetic oil. The catalyst comprises the following ingredients: a support and active ingredients, wherein the support is a porous inorganic support, and the active ingredients comprise a metal oxide and a Lewis acid type metal salt. The invention further provides a preparation method for the catalyst. The preparation method comprises the steps: dissolving a metal salt of the metal oxide, which serves as a raw material, in deionized water, dipping the support with the obtained metal salt solution, and then, carrying out drying, so as to obtain a metal salt loaded support; roasting the metal salt loaded support in a muffle furnace, so as to obtain a metal oxide loaded catalyst matrix; and then, adding the metal oxide loaded catalyst matrix into an organic solvent containing the Lewis acid type metal salt for loading, thereby obtaining a loaded dual-active-center catalyst.

Description

technical field [0001] The invention relates to a supported double-active center catalyst for preparing high-viscosity index polyalpha-olefin synthetic oil base oil and a preparation method thereof. Background technique [0002] Poly-α-olefin (PAO) synthetic oil is currently the best synthetic lubricating base oil, with high viscosity index, low volatility, low fluidity, good shear performance and excellent high temperature oxidation resistance; and traditional Compared with mineral lubricating oil base oils (Ⅰ, Ⅱ, Ⅲ base oils), PAO has the characteristics of small evaporation loss, good stability, wide temperature range, good compatibility with common materials and non-toxicity. It is not only used in automobiles, It is widely used in civil industries such as industry, and it is also the main source of high-grade lubricating oil base oil used in aviation, aerospace, military and other industries. [0003] PAO is generally composed of C 6 -C 20 A class of oligomers with b...

Claims

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Application Information

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IPC IPC(8): B01J27/135B01J27/125B01J27/128B01J29/03C10G50/02
CPCB01J27/125B01J27/128B01J27/135B01J29/0341B01J2229/183C10G50/02C10G2300/1088C10G2300/302C10G2300/70
Inventor 刘通王力搏王斯晗徐显明褚洪岭高立平王桂芝曹媛媛王亚丽王秀绘白玉洁于部伟马克存赵仲阳孙恩浩蒋岩闫义斌朱丽娜姜宁贾鹏飞韩雪梅黄付玲韩云光林如海
Owner PETROCHINA CO LTD
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