243 results about "Hexadecane" patented technology

An emulsified biofuel composition comprising: (A) a continuous phase comprising about 50-95 wt % of at least one liquid oil of vegetable or animal origin or mixtures thereof; (B) a water-containing dispersed phase comprising about 1-50 wt % water; (C) about 1-25 wt % of hydroxyl-containing organic compound selected from the group consisting of mono-, di-, tri- and polyhydric alcohols, provided that when a monohydric alcohol is used there is also present at least one of tert-butyl alcohol, at least one C2-C4 alkylene glycol or a mixture of both; (D) about 0.05-10 wt % of at least one emulsifier; wherein the dispersed water-containing droplets have an average particle size of less than about 20 microns. The biofuel is prepared from these components by mixing under high shear conditions, preferably with ultrasonic energy. The emulsifier(s) preferably exhibit a hydrophilic-lipophilic balance of about 8.5 to about 18 and the biofuel includes a cetane enhancer and mixture of an alcohol and mono- or poly-alkylene glycol.

Gel including a phase-change material and a gelling agent. In one embodiment, the phase-change material may be n-tetradecane, n-hexadecane or mixtures thereof. The gelling agent may be a high molecular weight styrene-ethylene-butylene-styrene (SEBS) triblock copolymer with a styrene:rubber ratio of about 30:70 to 33:67% by weight. To form the gel, the phase-change material and the gelling agent may be mixed at an elevated temperature relative to room temperature to partially, but not completely, dissolve the gelling agent. The mixture may then be cooled to room temperature. Alternatively, the phase-change material and the gelling agent may be mixed at room temperature, and the mixture may then be heated to form a viscoelastic liquid, which is then cooled to room temperature. The invention is also directed at a method of preparing the gel, a thermal exchange implement including the gel, and a method of preparing the thermal exchange implement.

This invention discloses a hydrocracking method.It includes that the heavy distillate oil and poor quality catalytic cracking diesel refining separately by hydrogenation, and the mixture enters into hydrocracking reactivator, then its cracking products is conducted gas liquid separation. Light naphtha, heavy naphtha, aviation kerosene, diesel oil and end oil will be obtained by distillating the liquid phase. The density of the poor quality catalytic cracking diesel oil is above 0.9g/ml, and the aromatic hydrocarbon is over 60wt% and the value of hexadecane is under 30. It is a adequate utilization of catalytic cracking craft to produce High aromatic hydrocarbon heavy naphtha and high quality end oil with heavy distillate oil and poor quality catalytic cracking diesel, which can be separately used as catalytic reforming material and making ethylene material by steam cracking method. High aromatic hydrocarbon heavy naphtha in this invention will produce a large amount of reforming hydrogen after catalytic reforming treatment, which can be used in the process of hydrocracking to make this preparation more ecnomical and reasonable.

The invention provides a method for preparing polyurea-melamin resin double-wall material cetane microcapsule, which comprises: first, toluene-2, 4- vulcabond and quadrol are adopted to synthesize inner layer shell material of the cetane microcapsule by an interfacial polymerization method, and then melamin resin performed polymer is adopted to synthesize outer layer shell material of the cetane microcapsule by an in-situ polymerization method, so that the polyurea-melamin resin double-wall material cetane microcapsule can be prepared. More particularly, the method comprises: hexadecane and the toluene-2, 4- vulcabond are fully mixed together and then added into the mixture of de-ionized water, sodium dodecyl sulfate and polyethylene glycol nonylphenyl ether to be emulsified to obtain cetane emulsified liquid; then, the mixed quadrol solution is dripped into the cetane emulsified liquid to react to obtain polyurea monolayer shell material microcapsule; finally, the polyurea monolayer shell material microcapsule reacts with the melamin resin performed polymer to obtain the polyurea-melamin resin double-wall material cetane microcapsule. The prepared microcapsule has good compactness, high strength and core content and excellent particle size distribution.

The invention belongs to the technical field of corrosion prevention of aluminum alloy. An aluminum alloy corrosion inhibitor is characterized in that: one gram of the aluminum alloy corrosion inhibitor consists of 0.05 to 0.10 microgram of potassium nitrite, 1.0 to 4.0 micrograms of calcium gluconate, 0.05 to 0.2 microgram of mercaptobenzothiazole, 0.05 to 0.2 microgram of borate and 0.05 to 0.10 microgram of hexadecane amine. The aluminum alloy corrosion inhibitor formed according to the ratio is economic, effective, low in toxicity and high in applicability, protects the original process flow from being damaged, and is the saline medium aluminum alloy corrosion inhibitor without additional equipment.

The invention discloses amphipathy photoswitch fluorescent polymer nano particles and a preparing method of the amphipathy photoswitch fluorescent polymer nano particles. Methyl methacrylate, polymerizable green fluorescence dye and a polymerizable photochromic compound are taken as monomers, hexadecane is taken as hydrophobe, a polyoxyethylene macromolecular chain transfer reagent is taken as a surface active agent, a one-step reversible addition-fragmentation chain transfer (RAFT) miniemulsion polymerization method is adopted for preparing the novel amphipathy photoswitch fluorescent polymer nano particles. The amphipathy photoswitch fluorescent polymer nano particles can emit intense macroscopic green or red fluorescence under irradiation of visible light and ultraviolet light, and have fast photoresponse capacity and good repeated fluorescence reversible switch performance. The amphipathy photoswitch fluorescent polymer nano particles have wide application prospects in the fields of cell imaging, bioanalysis, optical storage and the like.

The invention relates to a method for preparing magnetic/hollow double-shell layer print adsorbent by emulsion polymerization and belongs to the technical field of the preparation of environment function materials. Attapulgite is used as stabilizer; a few Fe3O4 nanometer particles are used as a magnetic separation carrier; a dispersion solution of hydrophilic Fe3O4 nanometer particles and attapulgite is used as a water phase; and a mixture of organic solvent hexadecane, cross-linking agent styrene, template molecule cyhalothrin, initiator azo isobutyric dimethyl ester and functional monomers acrylamide and tetra-vinyl pyridine is used as an oil phase. The water phase and the oil phase are mixed to prepare stable oil-in-water emulsion in an ultrasonic manner; and the magnetic hollow double-shell layer print polymer is prepared by emulsion polymerization. The magnetic hollow double-shell layer print polymer can be applied to selective recognition and separation of cyhalothrin in an aqueous solution. The magnetic hollow double-shell layer print polymer has a hollow double-layer structure, wherein the hollow structure can be used for effectively increasing adsorption capacity; the strength of the obtained printer polymer is enabled to be high by the inorganic particle layer in the shell layer; and the recognition points are unlikely to be damaged.

The invention discloses a phase change energy storage microcapsule of composite shell and its making method, wherein the core material of the microcapsule employs tetradecane, pentadecane or hexadecane, the shell layer has a composite construction, the inner layer is melamine resin, the outer layer is PEG200 modified melamine resin, or PEG200 modified melamine, or copolycondensation resin of methyl poultry manure amine, acetyl poultry manure amine or benzene substituted melamine.

This invention discloses a hydrocracking method, and this invention is used for producing high aromatic hydrocarbon heavy naphtha and high quality end oil.It includes that heavy distillate oil and poor quality catalytic cracking diesel hydrocracks separately, and the mixture of the cracking products is conducted gas liquid separation. Light naphtha, heavy naphtha, aviation kerosene, diesel oil and end oil will be obtained by distillating the liquid phase. The density of the poor quality catalytic cracking diesel oil is above 0.9g/ml, and the aromatic hydrocarbon is over 60wt% and the value of hexadecane is under 30. It is a adequate utilization of catalytic cracking craft to produce high aromatic hydrocarbon heavy naphtha and high quality end oil with heavy distillate oil and poor quality catalytic cracking diesel, which can be separately used as catalytic reforming material and making ethylene material by steam cracking method. High aromatic hydrocarbon heavy naphtha in this invention will produce a large amount of reforming hydrogen after catalytic reforming treatment, which can be used in the process of hydrocracking to make this preparation more ecnomical and reasonable.

The invention discloses a safety urea resin micro-capsule and a preparation method of the safety urea resin micro-capsule. The safety urea resin micro-capsule is prepared by carrying out in-situ polymerization on an organic phase change material functioning as a core material and urea resin functioning as a wall material, wherein the urea resin functioning as the wall material is obtained by subjecting formaldehyde and ureophil at the molar ratio of 1:1.4-1.6 to condensation polymerization; the organic phase change material functioning as the core material is one or more of liquid paraffin, hexadecane, n-octadecane and solid paraffin, and based on the ratio of the mass of the core material, namely the organic phase change material, to the total mass of the formaldehyde and ureophil in the wall material, the ratio of the core material to the wall material is 1.2-1.5:1. On the basis of ensuring the uniform particle size and high enveloping ratio of the safety urea resin micro-capsule disclosed by the invention, the content of the formaldehyde meets E1 of the European Norm (EN) standard, namely, the content of the formaldehyde in the micro-capsule is less than 10mg/100g.

The invention discloses Mn element and Zn element-doped super-paramagnetic ferrite nanoparticles and a preparation method thereof. Manganese element is added or manganese element and zinc element are simultaneously added into a face-centered cubic crystal structure of ferriferrous oxide nanoparticles by using a method of decomposing metal precursor compound at a high temperature; the magnetic performance of the prepared super-paramagnetic nanoparticles is improved by changing the doping amount and the distribution of the metal element; and primarily, the saturation magnetization is improved. The preparation method specifically comprises the following steps of: mixing acetylacetones of Fe and Mn as well as Zn with 1,2-hexadecanol; performing high-temperature decomposition in high-boiling-point solvent by taking oleic acid and oleylamine as surfactants; or performing high-temperature decomposition on composite oleate of Fe, Mn and Zn by taking the oleic acid as the surfactant; heating and preserving heat in stages in argon or nitrogen protective atmosphere to guarantee growth of nanoparticle nuclear; and cooling to room temperature after reaction is finished and settling and centrifuging to finally obtain the super-paramagnetic ferrite nanoparticles which are uniformly dispersed in normal hexane solution.

The invention provides a preparing method for 3,5-bis(tertiary butyl)-4-hydroxybenzoic acid hexadecane alkyl ester. The preparing method comprises the steps that 3,5-bis(tertiary butyl)-4-hydroxybenzoic acid, cetyl alcohol and a catalyst are added into a reaction vessel, flow of inert gas is introduced, a heat-preserving reaction is carried out at the temperature of 80 DEG C-160 DEG C, TLC tracks and monitors the reaction till the reaction endpoint, and reaction liquid is subjected to after-treatment to obtain 3,5-bis(tertiary butyl)-4-hydroxybenzoic acid hexadecane alkyl ester. By means of the preparing method, it is unnecessary to adopt other solvent, production cost is saved, and waste gas exhaustion of organic solvent is avoided in the synthesis process; the inert gas serves as a water-carrying agent and a protective agent, operation and control are simple, production safety is good, the color of products is improved, and the method has remarkable economic benefits and has remarkable environmental protection significance.

The invention discloses a method employing hexadecanoic acid butyl ester as a female spodoptera exigua hiibner attractant, and belongs to a method for attracting insects to protect plants by virtue of semiochemicals of host plants. A 0.01 to 0.05mol/L solution, further preferably a 0.03 mol/L solution, is prepared from the hexadecanoic acid butyl ester by adopting ethanol as a solvent. The female spodoptera exigua hiibner attraction rate of the hexadecanoic acid butyl ester is tested by a Y-type olfactometer to be maximally 68.0 percent. The egg laying amount after spraying application of the hexadecanoic acid butyl ester in an indoor egg laying experiment is 15.2 times higher than the reference, and the attraction rate in a field experiment reaches 81.4 percent. Such a compound can be used for preparing a biological pesticide for preventing and controlling spodoptera exigua hiibner.

The invention discloses an organic bi-metal gel capable of recognizing cyanic group ions through a fluorescent colorimetric method. The gel is prepared by dissolving a gelator, namely 1-naphthyl-3,4,5-tri(hexadecyloxyl) benzoyl hydrazone, Ca<2+>, and Cu<2+> into an organic solvent, and cooling to the room temperature so as to form the organic bi-metal gel. When negative ions are added into the organic bi-metal gel, only CN<-> can convert the color of the organic bi-metal gel from dark green to tawny, and very strong fluorescence is generated at the same time; other negative ion aqueous solution do not change the color of the organic bi-metal gel, and no fluorescence is generated; so the organic bi-metal gel can recognize the CN<-> in water liquid through a fluorescent colorimetric method in a mono-selectivity way, so that a person can quickly and conveniently detect CN<-> in water through his naked eyes.