15 results about "Cycloparaffins" patented technology

The invention relates to the technical field of biological aviation kerosene, and discloses a process for preparing biological aviation kerosene from waste grease. The method comprises the following steps: introducing waste oil into a hydrofining reactor, introducing hydrogen, carrying out a hydrodeoxygenation reaction under the catalysis of a hydrogenation catalyst, carrying out a reaction on the obtained hydrodeoxygenated oil in an isomerization pour point depressing reactor, and finally carrying out isomerization hot high-pressure separation treatment, isomerization cold high-pressure separation treatment and rectification tower segmentation to obtain the biological aviation kerosene. The specific surface area of a carbon matrix of the hydrogenation catalyst is large, the void structure is rich, a large number of Ni-Mo-P active catalytic centers can be exposed, precious metals such as platinum and ruthenium do not need to be added, the hydrodeoxygenation reaction efficiency of waste oil and fat is remarkably improved, the mass fraction of branched paraffin and cycloparaffin in biological aviation fuel is high, and the combustion performance is better.

This invention relates to the field of chemical hydrogen storage, and discloses a carbon-based catalyst, its preparation method and application, and a method for the dehydrogenation of methylcyclohexane. The catalyst comprises nitrogen (N), carbon (C), hydrogen (H), and platinum nanoparticles; the catalyst has the following properties: "Pt x C y N z H a The schematic chemical composition of the catalyst is shown in the figure, where z:a = 1.5~5; z:x = 5~50; z:y < 0.016; in the catalyst, nitrogen atoms are covalently bonded to at least two carbon atoms; nitrogen atoms are covalently bonded to hydrogen atoms; the carbon tetrachloride adsorption value (CTC) of the catalyst is ≥80%; in the XRD spectrum of the catalyst, the A of the Pt(111), (200), (220), (222) crystal plane diffraction peaks of the platinum nanoparticles is ≥85%, and A = (Pt(111) peak area) / (peak area of ​​Pt(111) + peak area of ​​Pt(200) + peak area of ​​Pt(220) + peak area of ​​Pt(222))) × 100%. This catalyst has good catalytic activity and low hydrogenolysis activity, making it particularly suitable for dehydrogenation reactions, such as the dehydrogenation reaction of alkyl-substituted cycloalkanes. It can effectively control the hydrogenolysis reaction during the dehydrogenation process and reduce the generation of by-products. It is especially suitable for the application of methylcyclohexane dehydrogenation reaction. After the dehydrogenation reaction, the conversion rate of methylcyclohexane is high, and the methane content in the product is <0.3wt%.

A CO2-derived synthetic aviation fuel composition is disclosed comprising distilled paraffine, cycloparaffin and aromatic product mixtures and having an average carbon number between about 10 and about 11.4, and less than about 500 ppm oxygenates. Methods for converting CO2 and a reduction gas, such as H2 or a hydrocarbon, using a reduction catalyst and an aromatic catalyst into mixtures of paraffins, and aromatics into the CO2-derived synthetic aviation fuel are also disclosed.

This invention provides a polycyclic aromatic compound, a material for organic devices, an organic electroluminescent element, a display device, and a lighting device. The polycyclic aromatic compound has a structure comprising one or more structural units represented by formula (1); typically, at least one of ring A, ring B, and ring C is a ring represented by formula (Het), and the others are substituted aryl rings, Y... 1 For B, X 1 and X 2 For >N-R, X 3 and X 4 For >O, >N-R, or >C(-Me) 2 R is a substituted or unsubstituted aryl group, and any two or three consecutive Zs are related to Y. 1 and X 1 and / or X 2 Directly bonded carbon atoms, with other Z atoms being N or C-R. Z R Z The aryl ring or heteroaryl ring in the structure may be condensed from at least one cycloalkane, and may be hydrogen or a substituent.

The invention provides a preparation method of a niobium-modified'metal / molecular sieve 'catalyst, which is characterized by comprising the following steps: grinding and mixing commercial hydrated niobium oxalate and a molecular sieve, and then roasting in a muffle furnace at 500 DEG C to prepare a yNb / molecular sieve (y = 1, 2, 5, 10, Nb wt%). Finally, Pt is loaded on the Nb / molecular sieve, and nitrate is removed through drying and roasting; after reduction, the xPt-yNb / molecular sieve (x = 0.5, 1, 2, Pt wt%) catalyst is prepared. After the Pt-Nb / molecular sieve catalyst prepared by the method is reduced, depolymerization and hydrogenolysis of C-O and Csp3-Csp3 bonds in lignin can be realized through a one-step process (directly taking lignin as a substrate for hydrogenolysis and depolymerization), and the activity of the catalyst is equivalent to that of a NbOx-based material with corresponding Pt loading capacity; and the molecular sieve-based catalyst is obviously superior to a molecular sieve-based catalyst with corresponding Pt loading capacity in a two-step process (lignin oil extraction-hydrogenolysis depolymerization). The catalytic material can significantly improve the yield of lignin conversion target products and monocyclic cycloalkanes. The material is high in specific surface area, low in energy consumption in the preparation process, environment-friendly, good in economical efficiency and suitable for industrial production.

In various embodiments, the present disclosure pertains to compositions and methods for prevention or treatment of cancer, prevention, treatment or inhibition of viral or microbial infection or replication, or prevention, treatment or inhibition of other disease. In some embodiments, the composition includes at least one of an arginine mimic (TA-R) or a histidine mimic (TA-H) or the administration thereof. In some embodiments, the at least one TA-R or TA-H is a TA-R that can include, without limitation, trans-4-guanidinomethylcyclohexanecarboxylic acid (TA-R1), amino((((1r,4r)-4-(methoxycarbonyl)cyclohexyl)methyl)amino)methaniminium chloride (TA-R1-OMe), amino(((1r,4r)-4-carboxycyclohexyl)amino)methaniminium chloride (TA-R2), cis-amino(((3-carboxycyclohexyl)methyl)amino)methaniminium chloride (TA-R3), cis-amino(((3(methoxycarbonyl)cyclohexyl)methyl)amino)methaniminium chloride (TA-R3-OMe), and cis-3-(guanidinomethyl)cyclopentane-1-carboxylic acid (TA-R4), compounds that have a cycloalkane having two or more functional groups off the cycloalkane, derivates thereof, salts thereof, and combinations thereof.

This invention provides a fuel composition comprising 5 wt% to 50 wt% alcohol and 50 wt% to 95 wt% of renewable cycloparaffinic gasoline, wherein the renewable cycloparaffinic gasoline comprises at least 40 wt% cycloparaffins, from 15 wt% to 25 wt% of aromatics, and from 20 wt% to 30 wt% of paraffins, by weight of the cycloparaffinic gasoline. The gasoline fuel composition of the present invention exhibits reduced particulate exhaust emissions from a vehicle operated by a spark ignition internal combustion engine.

A method for reducing the solid content of catalytic cracking oil slurry, comprising: (1) mixing an auxiliary agent with a raw oil and heating it to obtain a raw oil liquid, wherein the auxiliary agent is a petroleum wax having a carbon number of C30 to C75 and a paraffin and a small-ring cycloparaffin content of 50 to 60% by weight; (2) mixing a C6-C8 aromatic hydrocarbon diluent with the raw oil liquid to obtain a raw oil liquid containing the diluent, cooling the mixture until the auxiliary agent crystallizes, and performing liquid-solid separation to obtain a desolidified oil liquid and a wax paste; (3) removing the diluent from the desolidified oil liquid to obtain a catalytic cracking oil slurry with reduced solid content, and removing the diluent from the wax paste to obtain an auxiliary agent containing solids. The method provided by the present invention has simple steps, is green and environmentally friendly, and can significantly reduce the solid content of the catalytic cracking oil slurry, with a removal rate of greater than 85%.

A method for conversion of food waste to biofuel can include a first fermentation in which food waste is converted C2-C4 short-chain carboxylic acids, and a second fermentation in which the C2-C4 short-chain carboxylic acid are elongated into C5-C8 medium-chain carboxylic acids. Medium-chain carboxylic acids can undergo hydrogenation-dehydration of the medium-chain carboxylic acids into C5-C8 linear olefins. The C5-C8 linear olefins are then oligomerized to a C10-C25 mixture comprising olefins, paraffin, cycloparaffins, and aromatics through dimerization; and saturated to C10-C25 mixture by hydrogenation to produce the biofuel.

The invention discloses a novel N4-acyl substituted-2 '-deoxy-2'-fluoro-4 '-azido cytidine derivative and pharmaceutical application thereof, the novel N4-acyl substituted-2'-deoxy-2 '-fluoro-4'-azido cytidine derivative has a structure of a general formula (b): in the formula, R1 is H, F or CH3; r2 = H, N3 or C2H; and R3 is C0-C10 straight chain or branched chain saturated and unsaturated alkane, C6-C12 aromatic alkane or C3-C6 heterocyclic alkane. N4-acyl substituted-2 '-deoxy-2'-fluoro-4 '-azide cytidine derivatives are synthesized by modifying the 4-amino group of a compound a, and the compounds have anti-hepatitis B virus and anti-tumor activity; the preparation method is feasible; the compound has a good application prospect when being applied to drugs for treating viruses and tumors.

The present invention relates to the field of battery thermal management technology, specifically disclosing a coolant for an immersed liquid-cooled battery and a preparation method thereof. The coolant comprises the following components by mass percentage: 50-70% modified silicone oil; 20-40% hydrocarbon; and 0.9-11% additive. The modified silicone oil is vinyl-terminated silicone oil or amino-modified silicone oil, and the hydrocarbon is an isoparaffin or cycloparaffin. The present invention optimizes the formula to obtain a coolant for an immersed liquid-cooled battery, which is composed mainly of modified silicone oil and hydrocarbon, and contains additives such as nano-thermal conductive materials, corrosion inhibitors, antioxidants, and defoaming agents. The coolant has the advantages of high safety, efficient heat dissipation, biocompatibility, and adaptability to a wide temperature range, effectively improving the heat dissipation efficiency of the battery and ensuring the stability and safety of the liquid cooling system.

The invention is a process for preparing a fluid having a boiling range below 100 DEG C, said process comprising:-a step of catalytically hydrogenating a pyrolysis oil at a temperature of from 100 DEG C to 220 DEG C and a pressure of from 20 bar to 150 bar, based on the total weight of the pyrolysis oil, said pyrolysis oil comprising:-700 ppm to 3000 ppm by weight of aromatic compounds,-40% to 50% by weight of n-paraffin compounds,-1% by weight of an aromatic compound,-1% by weight of an aromatic compound,-1% by weight of an aromatic compound,-1% by weight of an aromatic compound,-1% by weight of an aromatic compound,-1% by weight of an aromatic compound,-1% by weight of an aromatic compound The present invention relates to a fluid comprising-40 to 50 wt% of an isoparaffin compound, and-2 to 15 wt% of a cycloparaffin compound, the fluid comprising less than 700 ppm by weight of aromatic compounds, based on the total weight of the fluid.

A rust preventive oil composition comprising a base oil (A), a fatty acid alkanolamide (B1), and a compound (B2) represented by the general formula (B2-1), wherein the cycloparaffin component of the base oil (A) is 35% by volume or more. 1 and R 2 are each independently a saturated or unsaturated hydrocarbon group having 4 to 26 carbon atoms. 1 ‑NH(CH2)3NH2·2R 2 ‑COOH (B2‑1)

The invention relates to a fuel composition comprising: (i) 60 to 94 mass% of a hydrocarbon mixture comprising: (a) 35 to 55 mass% of aromatic compounds; (b) 30 to 50 mass% of a mixture of n-paraffins and isoparaffins containing at least 5 carbon atoms, wherein the ratio of the amount of isoparaffins to the amount of n-paraffins is greater than or equal to 3; and (c) 5 to 15 mass% of cycloparaffins; (ii) 5 to 36 mass% of ethanol; and (iii) 1 to 10 mass% of butane. The composition can be used to fuel a spark-ignition engine in a motor vehicle intended for use by the general public or in a competition.

A lubricating oil composition, containing a base oil (A) that satisfies the following requirements (A-1) to (A-4), and a polymer (B) that satisfies the following requirements (B-1) and (B-2): (A-1): a 100° C. kinematic viscosity is 2.0 mm2 / s or more and less than 7.0 mm2 / s, (A-2): a viscosity index is 100 or more, (A-3): a content of cycloparaffin is 35.0% by volume or less based on a total volume of the base oil (A), (A-4): an aromatic content (% CA) is less than 1.0, (B-1): a ratio of a mass-average molecular weight (Mw) to a number-average molecular weight (Mn), [Mw / Mn] is 1.0 or more and less than 6.0, (B-2): a ratio of a peak integral value (I10) at a chemical shift 10.0 to 11.0 ppm to a peak integral value (I14) at a chemical shift 13.5 to 14.5 ppm, as determined in 13C-NMR analysis, [I10 / I14] is 0.05 or more.