6 results about "N-Butylamine" patented technology

The present application relates to the technical field of molecular sieve preparation, and provides a surface silicon-rich binderless ZSM-5 molecular sieve catalyst and a preparation method and application thereof.The overall SiO2 / Al2O3 of the ZSM-5 molecular sieve catalyst is 86-203, the SiO2 / Al2O3 of a surface layer with a depth of 2-10 nm is 8-33% higher than the overall SiO2 / Al2O3; the acid strength measured by using Hammett indicator n-butylamine titration method is H0≤+2.27, and the content of surface acid sites is ≤0.02 mmol / g; and the ZSM-5 molecular sieve catalyst is a shaped body without amorphous phase.The surface silicon-rich binderless ZSM-5 molecular sieve catalyst provided by the present application does not contain inert adhesive, has extremely weak surface acidity, can improve the catalytic effect, and reduces the generation of by-products.In addition, the preparation method provided by the present application is simple in process and suitable for industrial production.

The application discloses a kind of molybdenum bis (dibutyl dithiocarbamate) oxide and preparation method thereof, comprising the following steps: molybdenum trioxide, phase transfer catalyst and water are uniformly mixed, are sent into first-stage mixing reactor, sodium hydrosulfide, sodium thiosulfate and water are uniformly mixed, also are sent into first-stage mixing reactor, and first reaction solution is obtained by reaction;Di-n-butylamine and water are uniformly mixed, are sent into second-stage mixing reactor, carbon disulfide is simultaneously sent, and second reaction solution is obtained by reaction;First reaction solution, second reaction solution are respectively sent into third-stage mixing reactor and are reacted, obtain molybdenum bis (dibutyl dithiocarbamate) oxide solution, solid-liquid separation, drying, obtained immediately.The yield of product obtained by the application is high, the purity is high, the quality is stable, the whole reaction process is continuously carried out in airtight container, there is no gas volatilization, which is conducive to environmental protection, reaction solvent is water, resource consumption is less, can be recycled, clean and environmentally friendly.

This invention discloses an N-butylbenzenesulfonamide, its preparation method, and its applications, relating to the field of organic chemical synthesis technology. The preparation method uses benzenesulfonyl chloride and n-butylamine as raw materials, an organic base as catalyst, and a solid alkaline substance as acid-binding agent, reacting in an organic solvent system to obtain N-butylbenzenesulfonamide. The preparation method has the following advantages: low catalyst dosage, significantly reducing costs; high raw material utilization and few side reactions; low acid-binding agent dosage, resulting in less waste salt and wastewater; the reaction is carried out under normal pressure, eliminating the need for high temperature and high pressure conditions; the acid-binding agent and catalyst are readily available chemical raw materials, resulting in low cost and strong feasibility for large-scale production. The obtained N-butylbenzenesulfonamide is widely used in plasticizers, adhesives, printing inks, and surface coatings, showing excellent market prospects.

This invention discloses a continuous preparation method and application of a core-shell Cu-based catalyst. The method utilizes membrane dispersion microreactor technology, precisely controlling the solution pH and total flow rate to uniformly coat the metal core with SiO2 at a moderate condensation rate, forming a core-shell structure with uniform particle size and regular morphology. This structure provides abundant active sites and enhances the catalyst's hydrogenation activity. Simultaneously, the mutual doping of Cu and Ni creates a synergistic effect; the introduction of Ni significantly improves the catalyst's ability to dissociate H2 to generate activated hydrogen, promoting the adsorption and activation hydrogenation of the imine intermediate. The catalyst prepared by this invention exhibits excellent catalytic activity and stability in the reductive amination of 2,2,6,6-tetramethyl-4-piperidinone and n-butylamine to N-butyl-2,2,6,6-tetramethyl-4-piperidinamine.

The application discloses a method for preparing dibutyl lauroyl glutamine and application, wherein long-chain alkyl acyl glycine and acetic anhydride are added into a first reaction container containing cyclohexane, a long-chain alkyl cyclization product is prepared by warming and refluxing reaction; the prepared long-chain alkyl cyclization product is added into a second reaction container containing cyclohexane, an alkaline substance and N-butyl acrylamide are further added for reaction, the alkaline substance and solvent are removed after the reaction, and a long-chain alkyl butylamide propenyl oxazolone is prepared; the prepared long-chain alkyl butylamide propenyl oxazolone is put into a third reaction container containing cyclohexane, n-butylamine is further added into the third reaction container for refluxing reaction, and the solvent is evaporated to prepare long-chain alkyl glutamic acid dibutylamide. The application firstly performs ring-closing reaction, then performs Michael addition on a reserved site of the structure, and ingeniously performs chain extension reaction on the structure, and finally obtains a target compound.

This invention provides a method for synthesizing Silicalite-1 molecular sieves using n-butylamine as a template agent, relating to the field of molecular sieve technology. The invention involves mixing n-butylamine, water, a silicon source, Silicalite-1 molecular sieve seed crystals, and sodium hydroxide to obtain an initial gel mixture. The silicon source includes one or more of silica, silica sol, silica gel powder, and tetraethyl orthosilicate. The initial gel mixture is then subjected to hydrothermal crystallization to obtain Silicalite-1 molecular sieves. This invention uses n-butylamine as a template agent and employs a seed-assisted synthesis method for Silicalite-1 molecular sieves, which significantly reduces the amount of n-butylamine used and the synthesis time. Compared with existing technologies, the synthesis method provided by this invention features inexpensive raw materials, low organic template agent usage, high product crystallinity, short synthesis time, and high yield, overcoming the disadvantages of existing synthesis methods that require expensive and large amounts of template agents.