10 results about "Isopentane" patented technology

This invention discloses a method for the efficient conversion of isoparaffins, comprising the following steps: contacting a raw material containing isoparaffins and hydrogen with a catalyst in a reactor, reacting to obtain a product containing small molecule alkanes; wherein the isoparaffins are selected from at least one of isobutane, isopentane, neopentane, isohexane, and 3-methylpentane; wherein the small molecule alkanes are selected from at least one of ethane, propane, and n-butane; the catalyst is obtained by the following steps: mixing a metal acidic functional component, a metal basic functional component, a matrix precursor, a phosphorus auxiliary component precursor, a molding aid, and water, kneading, molding, and vacuum drying to obtain the catalyst.

The application discloses a method for producing ethylene raw material. The method comprises the following steps: mixing hydrocracking light naphtha and hydrogen into a first hydroconversion reaction zone to react, and then the reaction effluent enters a separation system to obtain hydrogen-rich gas and a first hydroconversion product; the first hydroconversion product is separated to obtain ethane, propane, isobutane, isopentane and n-pentane; the isobutane is mixed with hydrogen into a second hydroconversion reaction zone, and the reaction effluent is separated to obtain n-butane; the second hydroconversion reaction zone is filled with a hydroconversion catalyst containing ZSM-35 molecular sieve; and the isopentane is recycled to the inlet of the first hydroconversion reaction zone. The first hydroconversion reaction zone is filled with a hydroconversion catalyst containing mordenite, and at least two catalyst beds are filled; and the active metal content of the hydroconversion catalyst decreases in turn along the flow direction. The method can effectively improve the proportion of normal alkanes in the product and improve the quality of the ethylene raw material.

This application discloses a method for the conversion of C4-C6 alkanes. In a reactor, a raw material containing hydrogen and C4-C6 alkanes is contacted with a catalyst and reacted to obtain a product containing small molecule hydrocarbons; the C4-C6 alkanes are selected from at least one of n-butane, isobutane, n-pentane, isopentane, and 2,3-dimethylbutane; the small molecule hydrocarbons are selected from at least one of ethane, propane, n-butane, and n-pentane; the catalyst is prepared by the following steps: (1) mixing clay and sol, spray drying to obtain microspheres with a diameter of 1-50 μm; (2) immersing the microspheres in an aqueous solution containing a noble metal precursor, drying I, calcining I, and treating with a hydrogen atmosphere to obtain a catalyst precursor; (3) mixing the catalyst precursor, molecular sieve, and additives, rolling to form spheres, drying II, calcining II, and reducing to obtain the catalyst.

The application discloses a method for normalizing isomeric alkanes, which comprises the following steps: contacting isomeric alkanes and hydrogen with a catalyst in a reactor to obtain normal alkanes; the isomeric alkanes are selected from at least one of isobutane and isopentane; the catalyst is composed of an acidic carrier, a noble metal active component supported on the surface of the acidic carrier and an auxiliary element; the noble metal active component is selected from at least one of Pt and Pd; the auxiliary element is selected from at least one of Ce, Sn, La, Fe, Co, Ni and Cu; and the carrier is selected from at least one of molecular sieve, Al2O3 modified SO4 2‑ -WO3-ZrO2; the mass ratio of the noble metal active component to the acidic carrier in the catalyst is 0.0001-0.01:1; and the mass ratio of the auxiliary element to the acidic carrier is 0.0001-0.008:1.

A fiber-reinforced lithium borohydride-based all-solid-state electrolyte for suppressing dendrite formation, its preparation method, and its application are disclosed. The method employs a reverse micelle precipitation method to prepare a precursor solution by dissolving lithium borohydride and lithium iodide in an ether solvent solution. Aluminum oxalate and vapor-grown carbon fibers are then added, followed by dropwise addition to an isopentane solution containing a surfactant. After reverse micelles form, the solution is allowed to settle and react completely, and the solvent is thoroughly removed. The product from the settled reaction is dried and then subjected to partial hydrogen release treatment. The partially hydrogen-released product is dispersed in a benzene solution containing polymethyl methacrylate, freeze-dried, and then melt-reacted in situ in a universal mold. This process is simple and highly controllable, significantly improving the mechanical stability and dendrite resistance of the lithium borohydride-based all-solid-state electrolyte, and enabling long lifespan of all-solid-state lithium batteries under fast-charging conditions, thus facilitating commercial applications.

The application discloses a method for preparing high-quality cracking material, which comprises the following steps: contacting C5 alkanes and hydrogen with a catalyst in a reactor, and reacting to obtain high-quality cracking material; the C5 alkanes are at least one selected from normal pentane and isopentane; the high-quality cracking material is at least one selected from ethane, propane, normal butane and normal pentane; the catalyst is composed of an acidic carrier and a noble metal active element and an auxiliary element supported on the surface of the acidic carrier; the noble metal active element is at least one selected from palladium and platinum; the auxiliary element is at least one selected from potassium and iron; in the catalyst, the mass ratio of the noble metal active element to the acidic carrier is 0.0001-0.005:1, and the mass ratio of the auxiliary element to the acidic carrier is 0.002-0.05:1.

The application discloses a method for preparing normal paraffin, comprising the following steps: contacting isomeric alkanes and hydrogen with a catalyst in a reactor, and reacting to obtain normal paraffin; the isomeric alkanes are selected from at least one of isobutane and isopentane; the catalyst is composed of a double-layer spherical carrier and a noble metal active component loaded on the surface of the double-layer spherical carrier; and the noble metal active component is selected from at least one of platinum, palladium and gold.

This application discloses a method for converting C4-C5 isoalkanes. The method includes the following steps: in a reactor, a feedstock containing hydrogen and C4-C5 isoalkanes is contacted with a catalyst and reacted to obtain a product containing small-molecule hydrocarbons; the C4-C5 isoalkanes are selected from isobutane and / or isopentane; the small-molecule hydrocarbons are selected from at least one of ethane, propane, and n-butane; the catalyst is prepared by the following steps: (1) mixing molecular sieves, surfactants, and adhesives, and spheroidizing to obtain a catalyst precursor; (2) mixing the catalyst precursor with a mixture containing a metal element precursor, water, an additive, and boehmite, spheroidizing, drying, and calcining to obtain the catalyst.

The application discloses a C5-C6 hydrocarbon conversion method. The method comprises the following steps: (1) C5-C6 hydrocarbon is separated by normal and iso separation, and the separated normal pentane and normal hexane are directly used as ethylene raw materials; (2) the separated iso-pentane and iso-hexane in step (1) are mixed with hydrogen and pass through a hydroconversion reaction zone, the hydroconversion reaction zone is filled with at least two hydroconversion catalyst beds, the active metal content of the hydroconversion catalysts decreases in turn along the flow direction, and the active metal content of the hydroconversion catalysts filled in the adjacent two catalyst beds differs by 1-25 percentage points in terms of oxides; and (3) the reaction effluent of step (2) enters a separation system, and the hydrogen-rich gas and the hydroconversion product are separated, the C2-C4 hydrocarbon in the hydroconversion product is directly used as ethylene raw materials, and the C5-C6 hydrocarbon is recycled to step (1) for continuous reaction. By adopting the method, the quality of the ethylene raw materials can be maximized, and the ethylene yield and the total triene yield of the ethylene device can be significantly improved.

A process is provided for dechlorinating and separating a mixture of n-butane and alkylate. The process includes separating, in a separation zone, a feed stream comprising light hydrocarbons, propane, isobutane, organic chlorides, n-butane, and alkylate with C5+ hydrocarbons into an overheads stream comprising light hydrocarbons, propane, and isobutane and a bottoms stream comprising organic chlorides, n-butane and alkylate; passing the bottoms stream to a catalytic dechlorination zone configured to convert the organic chlorides to HCl and paraffins under catalytic dechlorination conditions, the catalytic dechlorination zone comprising a vessel and being configured to provide a HCl-rich stream, an n-butane-rich stream, optionally an isopentane-rich stream, and an alkylate-rich stream; removing the HCl-rich stream from the catalytic dechlorination zone as a gaseous overheads product; recovering the n-butane-rich stream from the catalytic dechlorination zone as a liquid side-draw product; optionally recovering the isopentane-rich stream from the catalytic dechlorination zone as a side-draw product; and recovering the alkylate-rich stream from the catalytic dechlorination zone as a liquid bottoms product.