13 results about "Diallyl sulfide" patented technology

The invention provides a composite extraction agent and a method for separating gold in electroplating wastewater by using the composite extraction agent, and belongs to the field of wastewater purification, the composite extraction agent comprises an extraction main agent and an extraction main agent stabilizer, the extraction main agent is a diallyl sulfide compound, and the extraction main agent stabilizer is dithiothreitol. The extraction main agent can form a stable complex with gold ions to enter an organic phase, and a nonlinear space structure of the extraction main agent can realize selective coordination with the gold ions, so that coordination reaction with other impurity metal ions is avoided; the sulfydryl in the dithiothreitol molecular structure has reducibility, so that the residual oxidant or dissolved oxygen in the solution can be prevented from oxidizing the extraction main agent, and the nonlinear polysulfide structure of the extraction main agent is kept. According to the method, the heterogeneous interface-coordination reaction of the activation sites in the molecular structure of the extracting agent and the gold ions in the inorganic phase is ensured by regulating and controlling the multi-component components of the composite extracting agent, efficient selective chelation of target metal is achieved, and the purpose of separating and enriching the gold ions in the gold-containing electroplating waste liquid is achieved.

The invention relates to the technical field of lithium ion battery material recovery, in particular to a green stripping recovery method of a waste lithium iron phosphate battery positive electrode material. The method comprises the following steps: discharging and disassembling the waste lithium iron phosphate battery to obtain a positive pole piece; a hydrogen bond acceptor, a hydrogen bond donor and water are mixed, heated and stirred, the eutectic solvent is obtained, the hydrogen bond acceptor is inorganic salt capable of generating sulfate radical, nitrate radical, phosphate radical, carbonate radical or ammonium radical, and the hydrogen bond donor is one or more of urea, thiourea, tetraethylenepentamine, n-butylamine, N-ethylethylenediamine, 1-propanethiol and diallyl sulfide; and soaking and stripping the positive pole piece in the eutectic solvent to obtain the stripped and recycled positive pole material. According to the method, stripping and recycling of the positive electrode material are achieved, and the stripped and recycled positive electrode material is complete in structure, high in purity and good in electrochemical performance.

The application discloses garlic essence and a preparation method thereof. The garlic essence comprises the following raw materials in mass parts: dimethyl trisulfide 2-5 parts, diallyl trisulfide 1-3 parts, methyl allyl trisulfide 3-6 parts, diallyl sulfide 0.5-2 parts, dicyclohexyl disulfide 1.5-3.5 parts, allyl methyl disulfide 2.5-4.5 parts and 2-methyl-2-butenal 3-5 parts. By adding 2-methyl-2-butenal and / or acetaldehyde diethyl acetal into the garlic essence, the problem of strong irritation of the garlic essence is greatly reduced.

The present invention relates to the technical field of lithium-ion battery material recycling, and in particular to a green stripping and recycling method for waste lithium iron phosphate battery positive electrode materials. The method comprises the steps of: discharging and disassembling the waste lithium iron phosphate battery to obtain a positive electrode sheet; mixing a hydrogen bond acceptor, a hydrogen bond donor, and water with heating and stirring to obtain a low eutectic solvent, wherein the hydrogen bond acceptor is an inorganic salt capable of generating sulfate, nitrate, phosphate, carbonate, or ammonium, and the hydrogen bond donor is one or more of urea, thiourea, tetraethylenepentamine, mono-n-butylamine, N-ethylethylenediamine, 1-propanethiol, and diallyl sulfide; placing the positive electrode sheet in the low eutectic solvent for immersion stripping to obtain a stripped and recycled positive electrode material. The method of the present invention realizes the stripping and recycling of the positive electrode material, and the stripped and recycled positive electrode material has a complete structure, high purity, and exhibits excellent electrochemical properties.

The invention belongs to the technical field of food safety and poultry processing, and particularly relates to an antibacterial composition for inhibiting VBNC state bacteria and application and a product thereof. The invention provides the antibacterial composition, the antibacterial composition is composed of carvacrol, diallyl sulfide and aluminum oxide nanoparticles, through the synergistic effect, the inhibition effect on VBNC campylobacter jejuni is remarkably improved, the antibacterial activity is enhanced, and the drug resistance risk is effectively reduced. The optimal ratio of the antibacterial agent is calculated through a dosage optimization method based on a mathematical model, the antibacterial effect is maximized, and the stability of the antibacterial agent in different processing environments is ensured. The problem that VBNC bacteria cannot be inhibited in the prior art is solved, and food safety is guaranteed. In addition, the combination of natural plant components and non-toxic nanoparticles is safe and environment-friendly, is suitable for multiple fields such as poultry processing, and has a wide application prospect.

The present disclosure is generally directed to sulfur polymers and their method of formation. In embodiments of the present disclosure, a sulfur polymer comprising a polysulfide chain, an aliphatic group and a stabilizing group are described. In embodiments, a method for forming a sulfur polymer is described, the method comprising: heating a mixture comprising polysulfides, a crosslinking agent, a diallyl sulfide, a stabilizing agent and an aliphatic group.

The invention relates to the technical field of food additives, and discloses European-style spicy flavor essence as well as a preparation method and application thereof. The invention discloses European style spicy flavor essence. Comprising the following preparation raw materials: lactic acid, hexanoic acid, butyric acid, ginger oleoresin, distilled ginger oil, allyl isothiocyanate, garlic oil, geranium oil, clove branch oil, black pepper oil, black pepper oleoresin, celery seed oil, fennel oil, linalool, diallyl sulfide, diallyl disulfide, coriander seed oil, myristica oil, p-cresol and caprylic capric triglyceride. The European-style spicy flavor essence provided by the invention can be used for preparing European-style spicy flavor seasonings, and is rich in characteristic flavor and small in dosage in the seasonings; the European style spicy flavor seasoning powder provided by the invention is high in taste coordination degree, vivid in flavor, good in temperature resistance and small in dosage in food; the daily requirements of consumers for preparing European style spicy flavor food can be met.

The invention discloses garlic essence and a preparation method thereof. The garlic essence is prepared from the following raw materials in parts by mass: 2 to 5 parts of dimethyl trisulfide, 1 to 3 parts of diallyl trisulfide, 3 to 6 parts of methyl allyl trisulfide, 0.5 to 2 parts of diallyl sulfide, 1.5 to 3.5 parts of dicyclohexyl disulfide, 2.5 to 4.5 parts of allyl methyl disulfide and 3 to 5 parts of 2-methyl-2-butenal. The 2-methyl-2-butenal and / or acetaldehyde diethyl acetal are / is added into the garlic essence, so that the problem of high irritation of the garlic essence is greatly reduced.

The application belongs to the technical field of solar cells, and specifically provides an organic-inorganic hybrid perovskite solar cell and a preparation method thereof, which comprises a conductive substrate, a hole transport layer, a perovskite light absorption layer, an electron transport layer, a charge blocking layer, a back electrode layer, and molecular modifiers and molecular passivators prepared by using alliin decomposition product molecules (diallyl sulfide, diallyl disulfide, 3-vinyl-1,2-dithiocyclohexane-4-ene and 3-vinyl-1,2-dithiocyclohexane-5-ene), vinyl diphenyl phosphine, diphenyl styryl phosphine oxide and diphenyl p-styryl phosphine. The prepared perovskite solar cell improves the transport and exchange efficiency of charges at the interface of the perovskite light absorption layer, and effectively improves the overall photoelectric conversion efficiency and stability of the device.

The present invention belongs to the field of food safety and poultry processing technology, and specifically relates to an antibacterial composition for inhibiting bacteria in the VBNC state, and its application and product. The present invention provides an antibacterial composition, which is composed of carvacrol, diallyl sulfide and aluminum oxide nanoparticles. The antibacterial composition significantly improves the inhibitory effect on VBNC Campylobacter jejuni through synergistic action, not only enhancing the antibacterial activity but also effectively reducing the risk of drug resistance. The present invention calculates the optimal ratio of antibacterial agents through a dosage optimization method based on a mathematical model, maximizes the antibacterial effect and ensures its stability in different processing environments. The present invention solves the problem of the inability to inhibit VBNC bacteria in the prior art and ensures food safety. In addition, the combination of natural plant ingredients and non-toxic nanoparticles is both safe and environmentally friendly, suitable for multiple fields such as poultry processing, and has broad application prospects.

The invention relates to a method for improving the desulfurization capability of a desulfurization strain on tire rubber, which comprises the following steps: inoculating a culture solution obtained by activating the desulfurization strain into a fermentation medium, fermenting to obtain a stable-phase fermentation solution, adding sterilized tire rubber powder and dibenzothiophene and / or diallyl sulfide, and carrying out desulfurization fermentation. Or screening a transcription factor b0840 capable of effectively enhancing the desulfurization capability of the desulfurization strains on the tire rubber from the desulfurization strains subjected to desulfurization fermentation, inoculating a culture solution activated by an overexpression desulfurization strain of the transcription factor b0840 into a stable-phase fermentation solution obtained by fermentation of a fermentation culture medium, adding sterilized tire rubber powder, and performing desulfurization fermentation, thereby obtaining the tire rubber desulfurization agent. The method has the advantages of high desulfurization rate, high efficiency, economy, environmental protection, simple process and low cost, and is suitable for industrial production.

The present invention relates to a high-tolerance composite hose and a production process thereof, belonging to the technical field of polymer composite materials. The composite hose comprises an aluminum foil and a high-tolerance inner film composited on its surface. The high-tolerance inner film is a copolymer of low molecular weight polyethylene, monomer 1, and monomer 2. The monomer 1 molecule contains branched fluorine-containing groups and double bonds. After copolymerization, fluorine groups are introduced on the outside of the main chain to protect the main chain and improve tolerance to organic solvents. Monomer 2 uses diethanolamine and diallyl sulfide as raw materials, and undergoes an addition reaction under the catalysis of sodium ethoxide to produce an intermediate containing branched hydroxyl groups. Subsequently, double bonds are introduced into the ends using acryloyl chloride for modification. The double bonds participate in copolymerization. The sulfur-containing and nitrogen-containing structures in the middle of the monomer 2 molecule have a chelating effect with the aluminum foil, forming an anchoring effect on the polymer after composite, so that the high-tolerance inner film has a strong adhesion strength to the aluminum foil.

The invention belongs to the technical field of solar cells, and particularly provides an organic-inorganic hybrid perovskite solar cell and a preparation method thereof. Comprising a conductive substrate, a hole transport layer, a perovskite light absorption layer, an electron transport layer, a charge blocking layer, a back electrode layer and a hole transport layer, wherein the hole transport layer and the hole transport layer are formed by using allicin decomposition product molecules (diallyl sulfide, diallyl disulfide, 3-vinyl-1, 2-dithiocyclohexane-4-ene and 3-vinyl-1, 2-dithiocyclohexane-4-ene). According to the perovskite solar cell prepared from a molecular modifier and a molecular passivator which are respectively prepared from 1, 2-dithiocyclohexane-5-ene, vinyl diphenylphosphine, stilbene phosphine oxide and diphenyl p-styryl phosphine molecules, the transport and exchange efficiency of charges at the surface interface of a perovskite light absorption layer is improved; and the overall photoelectric conversion efficiency and stability of the device are effectively improved.