56results about How to "Great potential for industrialization" patented technology

The invention discloses a mesoporous catalyst with the hydrothermal stability.The mesoporous catalyst is prepared by grafting organic functional groups to the surface of an SBA-15 type mesporous molecular sieve, wherein hydrogen-containing silane is adopted as a reagent for grafting the organic functional groups, the structural general formula is as shown in the description, and R1, R2 and R3 represent the different organic groups or the same organic group.The invention further discloses a method for preparing bio-oil by catalyzing hydrothermally-liquidized microalgae through the mesporous catalyst with the hydrothermal stability.

The invention belongs to the technical field of carbonization of waste polymers, in particular relates to a carbonization method of polyolefins, and more specifically relates to a low-temperature and green carbonization method of using biomass to promote waste polyolefins. The mixture of polyolefin and biomass is heated in an oxygen-containing atmosphere to undergo a carbonization reaction; wherein the polyolefin reacts with oxygen under heating conditions to form an oxygen-containing intermediate cross-linked structure, which is in the process of carbonization with the biomass The intermediate products containing hydroxyl and / or oxygen radicals formed in the process undergo condensation and / or polymerization reactions to form a crosslinked structure, inhibit the breakage of the polymer main chain, promote the carbonization of polyolefins, and form amorphous carbonized products. Compared with the traditional carbonization process, this method not only greatly reduces energy loss, but also innovatively solves the problem that polyolefins are difficult to form into carbon without catalysts, and provides a feasible way for large-scale recycling of waste polyolefins in the future. new technology.

The invention discloses a combined pretreatment method for efficiently separating bagasse biomass components, which mainly comprises the following steps: preimpregnating in dilute sulfuric acid; carrying out steam explosion treatment; washing with hot water; extracting; and carrying out enzymolysis. In the combined pretreatment method disclosed by the invention, on the basis of different physicochemical properties and structural features of the three components (hemicellulose, cellulose and lignin) in the bagasse, the component hemicellulose is sufficiently degraded and separated by dilute acid preimpregnation-steam explosion pretreatment, thereby reserving most of the cellulose and lignin; and the lignin is extracted by using a lower alcohol-alkaline water system, leaving high-cellulose-content residues. On the premise of low concentration of the added enzyme, the invention obviously increases the enzymolysis rate, and raises the conversion rate and comprehensive utilization rate of the bagasse biomass resource.

The invention discloses a preparation method of a photoactive benzofuranocoumarin compound. The photoactive benzofuranocoumarin compound is the compound shown in formula I; the enantioselectivity of the compound shown in formula I is as high as 95-99%. The photoactive benzofuranocoumarin skeleton of the present invention contains two chiral centers, adopts a 1,4-addition reaction strategy, uses a common and easily available chiral base as a catalyst, and uses 3-acylcoumarins of different structures, Benzofuranimine is used as a substrate to synthesize a photoactive benzofuranocoumarin compound containing two chiral centers; this method has low raw material prices, simple operation, low equipment requirements, environmental friendliness, and operator Safety, mild reaction conditions, high yield, high enantioselectivity, wide range of substrates, and great industrialization potential.

The invention relates to a preparing method for barium titanate nanofiber arrayed in an orientation mode. The preparing method includes the steps that a spinning solution is prepared; the electrostatic spinning solution is injected from an injector through a micro-injection pump to carry out electrostatic spinning, a positive pole of a high pressure generator is connected with the tail end of the injector, a negative pole is connected with conductor collecting plates in a collecting device, the collecting device is composed of an insulating substrate and the two conductor collecting plates arranged on the insulating substrate in parallel, the distance between the two conductor collecting plates is 5-30 mm, the length of the conductor collecting plate is 30-50 mm, the electrostatic spinning electric field intensity is controlled to be 0.5 kv / cm-2 kv / cm, the flow speed of the micro-injection pump is 0.1-0.5 ml / h, the spinning process is conducted at the temperature of 15 DEG C-25 DEG C, and an electrostatic spinning product is transversely collected between the two conductor collecting plates; the barium titanate nanofiber is obtained by conducting heat treatment on obtained barium titanate / polyvinylpyrrolidone compound fiber to remove polyvinylpyrrolidone. The barium titanate nanofiber which is good in crystallinity and high in purity and is of an orientation array structure can be obtained in a controllable mode.

The invention relates to a method for preparing a polyelectrolyte-containing composite ultrafiltration membrane. Scrape the membrane on a glass plate with liquid solution and immerse it in a gel water bath to prepare a polyelectrolyte-containing composite ultrafiltration membrane in one step. The advantages of the present invention are: on the one hand, the polyelectrolyte is uniformly dispersed in the polymer membrane matrix without agglomeration; on the other hand, the hydrophilicity and porous structure of the polyelectrolyte can fine-tune the hydrophilicity and pore structure of the ultrafiltration membrane , while ensuring a high interception, the water flux is greatly improved, and has great potential for industrialization.