SINOPEC RESEARCH INSTITUTE OF PETROLEUM PROCESSING CO., LTD.

A phosphate ester salt has a bicyclic organic base structure as a cation and a phosphate ester structure as an anion. The phosphate ester salt can effectively improve the wear-resistance performance and load-carrying capacity of the lubricating oil at a relatively small dosage, and the lubricating oil shows excellent copper corrosion resistance. Also described are a process for preparing the phosphate ester salt, a lubricating oil and lubricating grease containing the phosphate ester salt, and use of the phosphate ester salt.

A hierarchical porous all-silica molecular sieve is provided. The 31 P MAS NMR spectrum of the molecular sieve shows three characteristic peaks at chemical shifts of −5±1 ppm, −34±1 ppm and −61±1 ppm, wherein the peak intensity of the characteristic peak at the chemical shift of −5±1 ppm is recorded as N 1 , the peak intensity of the characteristic peak at the chemical shift of −34±1 ppm is recorded as N 2 , and the peak intensity of the characteristic peak at the chemical shift of −61±1 ppm is recorded as N 3 , then X 1 as defined by formula (1) is in the range of 0.10-0.30; X 1 =N 1 /N 3 (1); and X 2 as defined by formula (2) is in the range of 0.15-0.45; X 2 =N 2 /N 3 (2). When the molecular sieve is used in the gas-phase Beckmann rearrangement reaction of cyclohexanone oxime, the selectivity of the caprolactam product and the catalyst life can be improved.

A titanium silicalite molecular sieve with a hierarchical porous structure is provided. The spectral peaks of the 1 H MAS NMR spectrum of the titanium silicalite molecular sieve in the chemical shift range of 1-6 ppm are separated to obtain five spectral peaks whose chemical shifts corresponding to the peak positions are 1.8±0.1 ppm, 2.2 ppm±0.1 ppm, 2.8 ppm±0.1 ppm, 3.8±0.1 ppm and 4.6±0.1 ppm, respectively. The peak areas of the peaks satisfy specific proportional relationships. The molecular sieve has significantly enhanced anti-deactivation performance and can significantly improve the cyclohexanone oxime conversion rate and the caprolactam selectivity when used in the cyclohexanone oxime gas-phase Beckmann rearrangement reaction.

A metal-modified molecular sieve has a silica-alumina molecular sieve and a modifying metal selected from an alkaline earth metal, a Group IIIB metal, a Group IIIA metal, or combinations thereof. At least a portion of the modifying metal exists in the form of an extra-framework compensation cation of the molecular sieve, and the modifying metal as element represents from 8 wt. % to 30 wt. % based on the total amount of the metal-modified molecular sieve. In the metal-modified molecular sieve, the ratio of the weight percentage of the surface-layer modifying metal measured by X-ray photoelectron spectroscopy to the weight percentage of the bulk modifying metal measured by X-ray fluorescence does not exceed 1.45, calculated on the basis of the weight percentage of the element. The molecular sieve can be used in the preparation of a long-chain hydrocarbon-based aromatic compound, inhibiting the skeletal isomerization of the target long-chain hydrocarbon-based product.

A plastic processing method includes the following steps: S1. the plastic to be treated is sent to a liquefaction unit for liquefaction treatment to produce a liquefied material; S2. subjecting the liquefied material to heat treatment in a viscosity reduction unit to reduce its viscosity to produce a viscosity-reduced liquefied material; S3. the viscosity-reduced liquefied material is sent to a cracking reaction unit for cracking reaction to produce a reaction product; S4. the reaction product is sent to a separation unit for separation treatment. The system for carrying out the plastic processing method has a liquefaction unit, a viscosity reduction unit, a cracking reaction unit, and a separation unit.

A mesoporous pseudo-boehmite rich in surface hydroxyl groups and a preparation method thereof are provided. A catalytic cracking catalyst contains the mesoporous pseudo-boehmite is prepared and used in catalytic reactions. The pseudo-boehmite has a most probable pore size greater than 4.5 nm and not more than 12 nm.

An alkylbenzene-containing desorbent and its use in the adsorption-separation of meta-aromatic are provided. The desorbent contains 20-100 wt % of an alkylbenzene compound of general formula (I) and 0-80 wt % of a C5-C14 saturated aliphatic hydrocarbon. In formula (I), R 1 , R 2 and R 3 are independently selected from C 1-4 chain alkyl groups, and R 4 , R 5 and R 6 are independently selected from hydrogen, C 1-4 saturated hydrocarbon groups, C 1-4 alkoxy groups and halogens.

A method for producing light aromatic hydrocarbons from C 9 + aromatic hydrocarbons includes a step of contacting a C 9 + aromatic hydrocarbon with a dealkylation catalyst comprising a KL zeolite, and platinum and a modifying metal supported thereon in the presence of hydrogen, to obtain a light aromatic hydrocarbon. The modifying metal is selected from the group consisting of Group IIA metals and rare earth metals. By using a Pt/KL catalyst comprising a specific modifying metal in the dealkylation reaction of C 9 + aromatic hydrocarbons for producing light aromatic hydrocarbons, the method shows the advantages of high conversion rate of feedstock, high yield of light aromatic hydrocarbons, good reaction selectivity.

A continuous process for producing adamantane includes the steps of: 1) providing a liquid feed stream comprising endo-tetrahydrodicyclopentadiene; and 2) passing the liquid feed stream through a first reaction zone filled with a hydrogenation protective agent and a second reaction zone filled with an isomerization catalyst sequentially to carry out hydroisomerization reaction and obtain adamantane.

A pseudo-boehmite has a ratio of crystalline sizes D (130) and D (020) at a ratio of D (130) /D (020) =1.0-1.5, preferably, 1.1-1.3. A preparation method of the pseudo-boehmite, a catalytic cracking catalyst containing the pseudo-boehmite, and a preparation method and application of the catalytic cracking catalyst are provided. The pseudo-boehmite is applied to a catalytic cracking catalyst, and can produce a significant mesopore distribution in case that the catalyst strength is qualified, significantly improving the pore structure of the catalyst, which is of great significance for promoting the efficient diffusion of heavy oil macromolecules, reaction intermediates and product molecules in the catalyst, reducing the coke yield, and optimizing the product distribution.