C07C2523/745

METHOD FOR PRODUCING FULLERENE DERIVATIVE

This method for producing a fullerene derivative is a method for producing a fullerene derivative having a partial structure shown by formula (1) by reacting a predetermined halogenated compound and two carbon atoms adjacent to each other for forming a fullerene skeleton in a mixed solvent of an aromatic solvent and an aprotic polar solvent having a C═O or S═O bond in the presence of at least one metal selected from the group comprising manganese, iron, and zinc;

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(in formula (1), C* are each carbon atoms adjacent to each other for forming a fullerene skeleton, A is a linking group having 1-4 carbon atoms for forming a ring structure with two C*, in which a portion thereof may be a substituted or condensed group).

Cuy/MMgOx interfacial catalyst for selective alkyne hydrogenation and its preparation method
20220234036 · 2022-07-28 ·

Cu.sub.y/MMgO.sub.x interfacial catalyst for selective alkyne hydrogenation and its preparation method are disclosed. The preparation method of the catalyst includes: the mixture of salt and alkali solution is nucleated momentarily by nucleation/crystallization isolation method, preparing the composite metal hydroxide Cu.sub.yMMg.sub.4-LDHs as precursor, which has typical hexagonal morphology of the double hydroxide; the precursor is topologically transformed by heat treatment to produce unsaturated oxide; the catalyst with Cu.sub.y-MMgO.sub.x interface structure is prepared by separating and electronically modifying Cu particles. By adjusting the ratio of Cu.sup.2+/M.sup.3+ in LDHs, the electronic and geometric structure of Cu.sub.y-MMgO.sub.x interface can be flexibly controlled, thus enhancing the reaction activity, product selectivity and stability. The catalyst can be used in the selective hydrogenation of various alkynes in the fields of petrochemical and fine chemical industry, with the outstanding catalytic activity and C═C double bond selectivity. The catalyst also has good reusability.

RED MUD AS A CATALYST FOR THE ISOMERIZATION OF OLEFINS

A systems and a method for isomerizing a feedstock to form an alpha-olefin product stream are provided. An exemplary method includes calcining the red mud, flowing an olefin feedstock over the red mud in an isomerization reactor, and separating the alpha-olefin from a reactor effluent.

DIRECT NON-OXIDATIVE METHANE CONVERSION IN A CATALYTIC WALL REACTOR
20210379549 · 2021-12-09 ·

Disclosed herein are methane conversion devices that achieve autothermal conditions and related methods using the methane conversion devices.

CATALYST FOR CONVERTING LIGHT OLEFIN TO AROMATICS, METHOD OF MAKING AND METHOD OF USING THE SAME

A catalyst for converting hydrocarbon, a method of making the same, and a method of using the same are provided. Such a catalyst includes a zeotype microporous material, a binder material, and a metal phosphide, which can be in a range of from 0.01% to 10% by weight of a total weight of the catalyst. For example, such a catalyst can be used to convert light alkene or alkane into aromatic hydrocarbon such as benzene, toluene, xylenes, and a combination thereof. The alkene may be ethylene, propylene, butylene, or a combination thereof. The alkene may be supplied directly or from a stream converted from light alkane such as methane, ethane, propane, butane, or a combination thereof.

Catalyst for oxygen-free direct conversion of methane and method of converting methane using the same

The present invention relates to a catalyst for oxygen-free direct conversion of methane and a method of converting methane using the same, and more particularly to a catalyst for oxygen-free direct conversion of methane, in which the properties of the catalyst are optimized by adjusting the free space between catalyst particles packed in a reactor, thereby maximizing the catalytic reaction rate without precise control of reaction conditions for oxygen-free direct conversion of methane, minimizing coke formation and exhibiting stable catalytic performance even upon long-term operation, and to a method of converting methane using the same.

METHOD FOR PRODUCING 1,3-BUTADIENE

A method for producing 1,3-butadiene, including: (A) performing an oxidative dehydrogenation reaction between oxygen and a raw material gas including n-butene in the presence of a metal oxide catalyst, thereby obtaining a produced gas containing 1,3-butadiene; (B) washing the produced gas obtained in (A); (C) contacting the produced gas washed in (B) with a cooling medium to cool the produced gas; and (D) separating the produced gas cooled in (C) into molecular oxygen and inert gases, and other gases containing 1,3-butadiene, by selective absorption into an absorption solvent. In (B), the washing of the produced gas includes blowing the produced gas onto a liquid surface of a washing liquid so that the produced gas contacts the liquid surface of the washing liquid.

Organic base modified composite catalyst and method for producing ethylene by hydrogenation of carbon monoxide

An organic base modified composite catalyst for producing ethylene by hydrogenation of carbon monoxide is a composite catalyst and formed by compounding component I and component II in a mechanical mixing mode. The active ingredient of the component I is a metal oxide; the component II is an organic base modified zeolite of MOR topology; and a weight ratio of the active ingredients in the component I to the component II is 0.1-20, and preferably 0.3-8. The reaction process has an extremely high product yield and selectivity. The selectivity of C.sub.2-C.sub.3 olefins is as high as 78-87%; the selectivity of hydrocarbon products with more than 4 C atoms is less than 10%; the selectivity of a methane side product is extremely low (<9%); and meanwhile, the selectivity of the ethylene is 75-82%.

ORGANIC WASTE DISPOSAL PLANT AND METHOD
20220169582 · 2022-06-02 ·

The treatment plant comprises: a reactor for the sublimation of organic material in order to obtain a syngas; a filtration assembly for filtering the syngas in order to obtain a filtered gas, and a motor-generator assembly for producing electrical energy by means of the combustion of the filtered gas and thereby producing burnt gas; characterized in that said plant also comprises a methanation assembly, comprising: a catalyst that can extract carbon dioxide and nitrogen from the burnt gas; an electrolyzer that can separate water into oxygen and hydrogen by means of electrolysis; and a methanation reactor, which can produce methane by means of the Sabatier reaction using hydrogen and carbon dioxide originating from the electrolyzer and from the catalyst; the catalyst comprising a catalysis layer consisting of stone wool and nickel nanospheres, a plurality of steel microtubes containing copper microfilaments, and a system for controlling the reaction conditions.

Catalytic conversion of bio-mass derivable aliphatic alcohols to valuable alkenes or oxygenates
11738333 · 2023-08-29 · ·

Disclosed is a catalyst system, its methods of preparation and its use for producing, among others, alkenes and/or saturated or unsaturated oxygenates and, which include at least one of an aldehyde and an acid (such as propyl aldehyde, acrolein, acrylic acid, isobutyl aldehyde, methacrolein, methacrylic acid), comprising subjecting the corresponding an alcohol or a diol selected from the group consisting of propanol, propanediol and isobutanol that is derivable from biomass, to a vapor phase process over the catalytic system described herein in the presence of a gas mixture of oxygen, air or nitrogen and/or other suitable diluting gas. In the case where one of 1-propanol, or 1,2-propanediol or 1,3-propanediol or a mixture thereof is subjected to a vapor phase catalytic process over the said catalytic system in the presence of air or oxygen, and a co-fed gas, such as nitrogen or other diluting gas, the product is at least one of propylene, propyl aldehyde, acrolein and acrylic acid. In the case where isobutanol is subjected to such a process, the product is at least one of isobutylene, isobutyl aldehyde, methacrolein and methacrylic acid. The catalyst system comprises a single catalytic zone or multi-catalytic zones, in each of which the composition of the co-feed and other reaction parameter can be independently controlled.