30 results about "Superbase" patented technology

A mass spectrometer is disclosed wherein highly charged fragment ions resulting from Electron Transfer Dissociation fragmentation of parent ions are reduced in charge state within a Proton Transfer Reaction cell by reacting the fragment ions with a neutral superbase reagent gas such as Octahydropyrimidolazepine.

Methods for preparation of a unique superbase catalyst consisting of mixture of polyether alcohol and base in which a polyether alcohol superbase is produced by the removal of water or alcohol at elevated temperatures to form a polyether alcohol alkoxide. The superbase catalyst is useful in, but not limited to, quantitative isomerization of alkyl esters of vegetable oils containing interrupted double bond systems to yield esters with conjugated double bond systems, alkylations, arylations, acylations, aminations, condensations, eliminations, isomerizations, rearrangements, and Wittig reactions.

The invention discloses a process for extracting triacontanol from natural beeswax by microwave and solid superalkali catalysis. Firstly, a certain quality of natural beeswax is placed in a container, and methanol is added at a solid-to-liquid ratio of 1:50. Then add KF / γ‑Al in an amount of 30% of the natural beeswax quality 2 o 3 Solid strong alkaline agent, the reaction of several grams of natural beeswax is heated to reflux for 10 minutes under the microwave power of 200-300W, and the reaction of kilograms of natural beeswax is refluxed and heated for 30 minutes under the microwave power of 6 to 9kw, and it is carried out under microwave catalysis Transesterification reaction to obtain a mixture of triacontanol+methanol+methyl oleate+catalyst; filter to recover KF / γ‑Al 2 o 3 Solid strong base agent, to obtain triacontanol+methanol+methyl oleate mixture; then rotary evaporation, recovery of methanol, to obtain triacontanol+methyl oleate mixture; and then recrystallization to obtain triacontanol . Compared with traditional catalysts such as sodium hydroxide and potassium hydroxide under microwave conditions, the present invention forms a high-efficiency, environment-friendly and low-cost production process for preparing triacontanol using natural beeswax as raw material.

A mass spectrometer is disclosed wherein highly charged fragment ions resulting from Electron Transfer Dissociation fragmentation of parent ions are reduced in charge state within a Proton Transfer Reaction cell by reacting the fragment ions with a neutral superbase reagent gas such as Octahydropyrimidolazepine.

The invention discloses a highly active organic-inorganic hybrid solid superbase catalyst and a preparation method thereof. The catalyst comprises organic potassium metal clusters and a porous carrier, and the characteristic molecular formula is: KnR / MO, wherein K is an alkali metal Potassium, n is the degree of polymerization n=1-6, R is an alkyl group containing C6-C8 carbon atoms, and MO is a porous carrier. The invention loads organic potassium on a porous carrier in low-carbon straight-chain alkanes near the boiling point of potassium to form organic potassium cluster solid superbase. The solid superbase has extremely high activity and selectivity for base-catalyzed reactions such as solvent-free Tishchenko reaction and olefin isomerization. And without activation, it can be directly used to catalyze organic reactions. The method does not pollute the environment, is simple to operate, does not require high temperature and high vacuum, and the hexane can be recovered and recycled. This organic-inorganic composite catalytic material has great application prospects and economic value.