57results about How to "Abundant sources of raw materials" patented technology

Method for preparing multilayer graphene

ActiveCN102351172AAbundant sources of raw materialsThe reaction process is mild and controllable
The invention discloses a method for preparing multilayer graphene. The method is characterized in that: a compound of a vinyl polymer is prepared through carrying out bulk polymerization or in situ polymerization on raw materials consisting of 85-98.5 wt% of a vinyl monomer, 1-10 wt% of a layered compound and 0.5-5 wt% of an aromatization catalyst, a mixture containing the multilayer graphene isprepared through heating the compound of the vinyl polymer for 1min-10h at 700-1500DEG C in an inert atmosphere, and the purified multilayer graphene with the thickness of 0.35-15nm is prepared through immersing the mixture containing the multilayer graphene in a solution containing 10-30% by mass of hydrofluoric acid for 1-48h, separating to obtain a solid, and immersing the separated solid in amixed solution which comprises concentrated sulfuric acid and concentrated nitric acid according to a volume ratio of 1:1 for 1-48h, and separating. The method of the invention has the following advantages: the vinyl polymer is used as a carbon source, so the raw material source is abundant; the aromatization catalyst used in the invention can be directly obtained from the market; reaction processes are mild and controllable, and operations are convenient; and the low cost and large scale preparation of graphene can be realized.

Method for preparing basic magnesium carbonate and coproducing hydrochloric acid by mineralizing CO2 (carbon dioxide) via magnesium chloride

InactiveCN103173782AAbundant sources of raw materialsImprove product added value
The invention discloses a method for preparing basic magnesium carbonate and coproducing hydrochloric acid by mineralizing CO2 (carbon dioxide) via magnesium chloride. The method comprises the following steps: standing an anion-exchange membrane in an electrolytic bath and dividing into a positive electrode area and a negative electrode area; adding a conducting solution serving as a positive electrode electrolyte into the positive electrode area; adding a magnesium chloride solution serving as a negative electrode electrolyte into the negative electrode area; filling carbon dioxide gas; applying a direct current power supply between the positive electrode and the positive electrode; reducing a hydrogen ion in the negative electrode electrolyte to form hydrogen on the negative electrode; converting carbon dioxide in the negative electrode electrolyte to form a bicarbonate radical; enabling the chloride ion replaced when bicarbonate radical and magnesium chloride generate magnesium bicarbonate to reach the positive electrode area through the anion-exchange membrane under the action of current, and oxidizing the chloride ion to form chlorine on the positive electrode; carrying out a reaction on chlorine and hydrogen which are generated by the electrolysis to generate hydrochloric acid; moving out the magnesium bicarbonate generated by the electrolytic reaction in the negative electrode area; and heating, filtering and drying the magnesium bicarbonate, thereby obtaining the basic magnesium carbonate. According to the method, when the carbon dioxide is mineralized, the basic magnesium carbonate and hydrochloric acid which have high added values are generated at the same time.

Preparation method of surface-grafted modified nanocellulose crystal

The invention belongs to the field of cellulose modification and utilization and in particular relates to a preparation method of a surface-grafted modified nanocellulose crystal. The preparation method of the surface-grafted modified nanocellulose crystal comprises the following steps of: dispersing nanocellulose crystal in an organic solvent; introducing an unsaturated double bond onto the surface of the nanocellulose crystal through a reaction of maleic anhydride and hydroxyl groups on the surface of the nanocellulose crystal; and introducing an initiator and an unsaturated monomer to prepare the surface-grafted modified nanocellulose crystal through a radical polymerization reaction. The surface-grafted modified nanocellulose crystal is uniformly dispersed in a polymer matrix and good in compatibility with the interface of the polymer matrix, and therefore, the prepared polymer nanometer composite material has higher tensile strength and elongation at break. The preparation method of the surface-grafted modified nanocellulose crystal has the advantages of rich raw material resource, simple process, completely biodegradable product, high mechanical performance and the like, and can be used for a plurality of fields including the packaging field, the biological field, the medical field, the engineering plastic field and the like.

Mixed particle deodorant taking natural attapulgite clay as main body

The invention discloses a mixed particle deodorant taking natural attapulgite clay as a main body. The mixed particle deodorant consists of the following raw materials in parts by weight: 50-60 parts of attapulgite clay, 2-3 parts of sophorolipid, 10-15 parts of bentonite, 6-10 parts of active carbon powder, 6-10 parts of calcium chloride, 2-4 parts of rice hull, 2-3 parts of coconut fiber, 1-2 parts of sodium citrate, 2-3 parts of alumen, 0.05-0.1 part of thymol, 1-2 parts of potassium sorbate, 2-3 parts of calcium propionate, 3-6 parts of scolecite, 0.2-0.5 part of peppermint oil, 0.5-1 part of zinc pyrithione, 3-5 parts of aluminum phosphate, 1-2 parts of coco fatty acid diethanol amide, 0.6-1 part of alpha-terpilenol, 0.6-1 part of metaboric acid and 0.1-0.4 part of a silane coupling agent KH560. The mixed particle deodorant is free of any chemical synthetics, and thus the mixed particle deodorant does not threat and damage the health of a user. The mixed particle deodorant has the advantages of abundant sources of raw materials, low cost, simple preparation technology, good environmental protection performance and the like. The mixed particle deodorant is large in adsorbing capacity and long in service life, the effect of removing air odor is obvious, and the mixed particle deodorant can be repeatedly used after airing. The product can be widely applied to removing order and purifying air in houses (refrigerators and freezers), toilets in offices and meeting rooms, living rooms of pets and animal cultivation rooms.
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