34 results about "Carbonium ion" patented technology

A method for converting n-alkane into isoalkane by a gold-loaded molecular sieve catalyst belongs to the technical field of catalysts. After a molecular sieve is treated by completely negative pressure degasification and purification, a gold precursor is loaded on the molecular sieve carrier by a negative pressure deposition precipitation method so as to form a Si-O(H)-Au structure. The molecular sieve is a high-silica zeolite molecular sieve; the preparation of gold-loaded catalyst under a negative pressure condition by the deposition precipitation method facilitates the purification of the internal and external surfaces and pore channels of the molecular sieve; and Au is easy to enter the pore channels of the molecular sieve to reach high dispersion, and can be combined with silicon hydroxyls on the internal and external surfaces to form the Si-O(H)-Au structure. The method can dehydrogenize n-alkanes to generate alkenes under the difunctional action of metal and the carrier; the alkenes obtain protons at the acid sites to form carbonium ions; and isoalkanes are generated by skeletal isomerization and hydrogenation desorption of the carbonium ions.

The invention provides a method for production of adamantanol. The adamantane reacts in a mixing solution containing a fuming sulfuric acid and an organic nitrile compound and the obtained reaction solution is hydrolyzed. The adamantanol is industrially beneficially produced by the adamantane at high yield in short time without using a large amount of fuming sulfuric acid and dear carbonium ion generation compound. The adamantanol is used as the raw material of a medicine intermediate and a monomer for a photoresist, the raw material of a photochromic compound and the raw material of a coating, a cement, a binder, a film and an adsorbing material.

The invention discloses a low-carbon alkane isomerization catalyst and a preparation method thereof. The catalyst contains an MCM-22 / ZSM-35 composite molecular sieve and group-VIII precious metal active components, wherein counted by the weight content of the catalyst, the content of the MCM-22 / ZSM-35 composite molecular sieve is 1.0 to 90 percent, the content of group-VIII precious metals is 0.1 to 1.5 percent, an MCM-22 molecular sieve of the MCM-22 / ZSM-35 composite molecular sieve wraps a ZSM-35 molecular sieve, and the weight content of the MCM-22 in the MCM-22 / ZSM-35 composite molecular sieve is 1.0 to 50 percent. The catalyst can shorten the dwell time of a carbonium ion intermediate in pores of the catalyst, improves the activity and isomerization selectivity and stability of the catalyst, and also suppresses secondary reaction such as polymerization coking and the like.

A catalyst for hydroisomerization of n-alkanes with nanometer HBeta zeolite as a carrier. The nanometer HBeta grain size is 30.0nm-180.0nm. The catalyst of the invention can shorten the residence time of the carbenium ion intermediate in the pore channels of the catalyst, improve the selectivity of isomerization products, and simultaneously suppress secondary reactions such as polymerization and coking. The catalyst of the present invention adopts the preparation method of hydrothermal treatment after the metal is loaded first, which reduces the number of stronger L acid centers on the metal oxide-loaded zeolite catalyst, suppresses side reactions such as hydrogen transfer reactions dominated by stronger L acids, and reduces The amount of carbon deposited on the catalyst.

The invention relates to an auxiliary capable of increasing clean oil yield and used for catalytic cracking, which is composed of the following components by weight percentage: 5-15% of dispersing agents, 10-25% of antioxidant, 5-15% of metal ion deactivation agents, 20-35% of mixed rare earth and the balance solvents. By adding the auxiliary in a catalytic cracking system, carbonium ion reaction can be promoted, generation of side reactions such as thermal cracking reaction and dehydrogenation condensation reaction can be restrained, generation of by-products such as dry gas and hard coke is reduced, and yield of products with high additional value such as liquefied gas, gasoline and diesel oil is improved. The auxiliary has the function of a metal passivator and can replace the metal passivator. The auxiliary can effectively passivate metallic nickel and vanadium metal, reduces dehydrogenation activity of the metallic nickel and vanadium metal, accordingly reduces depositing of scaling materials on surfaces of a catalyst, prolongs service life of the catalyst, enables devices to operate for a long time, and is a multifunctional oil soluble liquid auxiliary for catalytic cracking.

Diaryl amines are selectively alkylated by reaction with branched olefins, which olefins are capable of forming tertiary carbonium ions and can be conveniently prepared from readily available branched alcohols. The diaryl amine products are effective antioxidants and often comprise a high amount of di-alkylated diaryl amines and a low amount of tri- and tetra-alkylated diaryl amines.

The invention provides a preparation method of blue light emitting diode and includes the following steps: a. implant the carbon ions with its energy between 20keV and 50keV and 5 multiplied by 10 to the power 16 ions / Sq cm into the N-type single crystal of silicon with its resistivity between 30 omega multiplied by centimeter and 50 omega multiplied by centimeter; b. put the N-type single crystal of Si implanted by carbonium ions into the tubular furnace, input the hydrogen or nitrogen gas or argon gas into it and passivate it for between 20 minutes and 90 minutes at the temperature of between 800deg.C and 1100deg.C; c. carry out the electrochemical corrosion for between 10 minutes and 50 minutes at constant pressure and with the current density between 20mA / Sq cm and 100mA / Sq cm, treat it with normal silicon plane and get the product. The gas flow of the hydrogen or nitrogen gas or argon gas is between 1000ml / min and 2500ml / mim and the corrosive liquor of the electrochemical corrosion is composed of the hydrochloric acid: grain alcohol=1:1-5, in amount of weight.

The invention relates to a titanium tetrachloride co-initiation system, and a method for preparing high-reaction-activity polyisobutylene by using it. The system is suitable for the preparation of the high-reaction-activity polyisobutylene through cationic polymerization of isobutene, an isobutene and inert solvent mixed solution or an isobutene-containing mixed light C4 fraction. An organic compound additive can be introduced into the polymerization system to efficiently and selectively remove beta-H on -CH3 adjacent to a carbonium ion at the end of an active chain in order to generate a polyisobutylene chain end alpha-double bond structure, so the high yield and high-reaction-activity polyisobutylene can be directly prepared, and the chain end alpha-double bond content can reaches above 90%.

The invention relates to a spray nozzle for catalytic cracking and an application. The spray nozzle can simultaneously spray three raw materials and comprises a hydrocarbon oil I outer sleeve pipe, ahydrocarbon oil I inner sleeve pipe, a hydrocarbon oil I outer spray head, a hydrocarbon oil I inner spray head, a steam chamber, a hydrocarbon oil I and steam mixing chamber, a hydrocarbon oil II spray head, a hydrocarbon oil III spray head, a hydrocarbon oil II semi-circular atomizing chamber and a hydrocarbon oil III semicircular atomizing chamber. The spray nozzle can be used in a catalytic cracking lift pipe device which successively comprises a light hydrocarbon reaction zone I, a heavy hydrocarbon reaction zone and a light hydrocarbon reaction zone II from bottom to top along the axis of a reactor. According to the invention, through arrangement of the hydrocarbon oil II semi-circular atomizing chamber and the hydrocarbon oil III semi-circular atomizing chamber on the spray nozzle,the spray nozzle provided by the invention can simultaneously spray three raw materials, and can be used for experimental study of simultaneous contact and reaction of different catalytic raw materials with a catalyst;; and light hydrocarbons sprayed by the hydrocarbon oil II spray head and the hydrocarbon oil III spray head preferentially contact with the catalyst for a reaction to generate a large amount of carbonium ions, so conversion of heavy hydrocarbons is accelerated, and the spray nozzle provided by the invention has the characteristic of increasing the yield of gasoline.

The invention relates to a carbonyl protecting group deprotecting method. It adopts olefin ether or agent the could produce carbonium ion to take reaction with acid agent to form carbonium ion intermediate, then combining with nitrogen atoms or sulphur atoms to achieve deprotecting effect of taking further aqueous alkali open loop and hydrolyzing. The invention has mild and easy reacting condition, low cost agent, and has high yield.

The invention relates to a styrene-isomonoolefin-styrene triblock copolymer and a preparation method thereof. The method comprises the following steps: (1) in the presence of an organic solvent and titanium tetrachloride, carrying out first cationic polymerization reaction on isomonoolefin to obtain a polymeric system containing polyisomonoolefin with reaction activities at the tail end; and (2) contacting the polymeric system with a styrene-containing solution, and carrying out second cationic polymerization reaction, wherein the first cationic polymerization reaction in the step (1) also comprises the step of introducing an initiator system, and the initiator system contains at least one compound capable of providing carbonium ions and at least one activator. The method can effectively lower the generation of the styrene homopolymer and styrene bi or high copolymer, thereby effectively enhancing the block polymerization efficiency.

A method for producing an amine. The first step is contacting a cyanide, an acid, water and a substrate compound capable of generating a carbonium ion by reaction with the acid to generate a first reaction intermediate. The second step is contacting the first reaction intermediate with water to form a second reaction intermediate. The third step is removing cyanide present in the second reaction intermediate to a concentration less than 10 ppm. The fourth step is contacting the second reaction intermediate with an alkali metal hydroxide to form the amine.

The invention discloses an n-butane hydroisomerization catalyst, and a preparation method and application thereof. The catalyst is prepared from 5-35 wt% of modified Y molecular sieve, 45-75 wt% of SAPO-11 molecular sieve, 0.05-5.0 wt% of noble metal active component, 0.05-5.0 wt% of assistant active metal component tin and 10-20 wt% of aluminum oxide adhesive, wherein the noble metal active component is dispersed in the modified Y molecular sieve and SAPO-11 molecular sieve. Since the modified Y molecular sieve is added, alkane molecules can generate carbonium ions required by the reaction process more easily; the modified Y molecular sieve has large pore canals, and thus, can effectively decrease the blocked pore canals in the molecular sieve and change the pore canal structure of the catalyst support; and the pore size of the Y molecular sieve can be modified and adjusted to change the pore volume of the molecular sieve and improve the diffusion restriction of the pore canals on the reactant or product molecules, thereby effectively performing the isomerization reaction and obtaining the high-yield isomerizate.

The disclosure describes a process for the production of a cellulosic feedstock for enzymatic hydrolysis and / or a lignin fraction for chemicals production, characterized in that a) the raw material is lignocellulosic biomass b) the biomass is treated in hot water c) at least one carbonium ion scavenger is present in the treatment.

The invention relates to a spray nozzle for a catalytic cracking experiment and an application. The spray nozzle can simultaneously spray three raw materials and comprises a hydrocarbon oil I outer sleeve pipe, a hydrocarbon oil I inner sleeve pipe, a hydrocarbon oil I outer spray head, a hydrocarbon oil I inner spray head, a hydrocarbon oil II sleeve pipe, a hydrocarbon oil III sleeve pipe, a steam chamber, a hydrocarbon oil I and steam mixing chamber, a hydrocarbon oil II spray head, a hydrocarbon oil III spray head, a hydrocarbon oil II circular atomizing chamber and a hydrocarbon oil III circular atomizing chamber. According to the invention ,through arrangement of the hydrocarbon oil II circular atomizing chamber and the hydrocarbon oil III circular atomizing chamber on the spray nozzle, the spray nozzle provided by the invention can simultaneously spray three raw materials, and can be used for an experimental for experimental study of simultaneous contact and reaction of different catalytic raw materials with a catalyst; and light hydrocarbons sprayed by the hydrocarbon oil II spray head and the hydrocarbon oil III spray head preferentially contact with the catalyst for a reaction to generate a large amount of carbonium ions, so conversion of heavy hydrocarbons is accelerated, and the spray nozzle provided by the invention has the characteristics of increasing the yield of liquefied gas, gasoline and low-carbon olefins and improving total liquid yield and conversion rate.

The invention provides a method for production of adamantanol. The adamantane reacts in a mixing solution containing a fuming sulfuric acid and an organic nitrile compound and the obtained reaction solution is hydrolyzed. The adamantanol is industrially beneficially produced by the adamantane at high yield in short time without using a large amount of fuming sulfuric acid and dear carbonium ion generation compound. The adamantanol is used as the raw material of a medicine intermediate and a monomer for a photoresist, the raw material of a photochromic compound and the raw material of a coating, a cement, a binder, a film and an adsorbing material.