30 results about "Alcohol reduction" patented technology

Spark ignition engine operation at higher RPM so as to reduce alcohol requirements in high efficiency alcohol enhanced gasoline engines is disclosed. Control of engine upspeeding (use of a higher ratio of engine RPM to wheel RPM) so as to achieve an alcohol reduction objective while limiting any decrease in efficiency is described. High RPM alcohol enhanced gasoline engine operation in plug-in series hybrid powertrains for heavy duty trucks and other vehicles is also described.

The invention belongs to the field of preparation of metal nanoparticles, in particular to a method for preparing hydrophobic noble metal nanoparticles by using microwaves in an organic solvent with a high boiling point and low pollution. The invention uses alcohol to reduce noble metal compounds in a safe organic solvent reverse micelle system, and prepares surfactant-protected hydrophobic noble metal nanoparticles through microwave radiation. The method for preparing hydrophobic noble metal nanoparticles has the advantages of rapidity and good reproducibility, and is expected to realize mass production. In addition, the invention can be extended to the preparation of other hydrophobic metal nanoparticles.

The invention provides a method of regulating and controlling lengths of silver nanorods in a polyhydric alcohol reduction method through hydrogen peroxide. The method comprises the following steps that silver nitrate and glycerol are blended and stirred and dissolved to obtain a solution A; sodium chloride, polyvinylpyrrolidone, the glycerol and the hydrogen peroxide are blended and stirred and reacted at the temperature which ranges from 160 DEG C to 200 DEG C for 15 minutes to 4 hours to obtain a solution B; the solution A is mixed in the solution B and reacted at the temperature which ranges from 160 DEG C to 200 DEG C for 15 minutes to 4 hours, a centrifugal separation of a reaction solution is conducted, a lower layer sediment is obtained and washed, and the silver nanorods with different lengths are obtained. The method is simple in technology, low in cost, the lengths of the silver nanorods can be changed only by adding the hydrogen peroxide, the lengths of the silver nanorods can be regulated and controlled according to the adding amount of the hydrogen peroxide, the diameter of the silver nanorods has no obvious changes while the lengths are changing, the uniqueness of regulation and control is guaranteed, and the method is incapable of introducing impurities and is suitable for large-scale industrial production.

The present invention discloses one simple process of synthesizing hydratropic aldehyde. The material 2-(alpha-phenyl ethyl) benzimidazole salt, 2-(alpha-phenyl ethyl) benzoxazine salt, 2-(alpha-phenyl ethyl) benzthiazole salt, 2-(alpha-phenyl ethyl) imidazoline salt, 2-(alpha-phenyl ethyl) oxazoline salt, or 2-(alpha-phenyl ethyl) thiazoline salt is produced into hydratropic aldehyde through sodium-alcohol reduction, acid hydrolysis and extraction.

The invention provides a method for quickly preparing a silver nanoparticle block-graphene-nickel foam composite material. The method mainly comprises the following process steps that (1) a chemical vapor deposition method (CVD) is used for growing a layer of graphene on a nickel foam substrate, and a graphene-nickel foam substrate is prepared; (2) a polyhydric alcohol reduction method is adopted for preparing a silver nanoparticle block; (3) the above graphene-nickel foam substrate material is placed into a reactor with magnetons, the silver nanoparticle block obtained after acetone centrifugal attenuation is added, the reactor is placed into an oil bath pan, the rotating speed is adjusted to be 260 r / min to 360 r / min, heat preservation is carried out at a certain temperature for a certain time, taking out, rinsing and drying are carried out, and the silver nanoparticle block-graphene-nickel foam composite material is obtained; and (4) the obtained silver nanoparticle block-graphene-nickel foam composite material is placed into a tube furnace for annealing treatment.

The invention relates to an LSPR-adjustable gold@silver core-shell nano-star and a preparation method thereof. The gold@silver core-shell nanostar includes a gold nanostar and a silver shell covering the surface of the gold nanostar, and the gold nanostar includes a gold nanosphere at the core and a gold nanothorn on its surface. The present invention first adopts the liquid phase chemical method regulated by seeds to regulate the concentration of gold nanospheres in the precursor and utilizes the regulating effect of surfactant on the growth of gold nanostructures to prepare LSPR peaks with adjustable size between 587-890nm Gold nanostars; further adopt the polyhydric alcohol reduction method, use ethylene glycol as the solvent and reducing agent, and silver nitrate as the silver source, coat a layer of silver shell on the surface of the gold nanostars in situ, and greatly improve the quality of the nanostars. The surface-enhanced Raman scattering (SERS) activity of the structure is maintained while maintaining the morphology and LSPR interval of the core-shell nanostar. This LSPR-tunable gold@silver core-shell nanostar provides a new material option for plasmon-driven solar-chemical energy photocatalytic reactions.