The disclosure provides a synthesis method of 2,4,6-trifluorobenzylamine, belonging to the technical field of chemical synthesis. The synthesis method is characterized by comprising the following steps: (1) allowing pentachlorobenzonitrile as a raw material to undergo fluoridation reaction with a fluoridation agent based on 2,4,6-trifluoro-3,5-dichlorobenzonitrile as a solvent to obtain 2,4,6-trifluoro-3,5-dichlorobenzonitrile; (2) hydrogenating the obtained 2,4,6-trifluoro-3,5-dichlorobenzonitrile with hydrogen in the presence of organic carboxylic acid, based, on palladium carbon as a catalyst to obtain 2,4,6-trifluoro-3,5-dichlorobenzylamine; and (3) hydrogenating the obtained 2,4,6-trifluoro-3,5-dichlorobenzylamine with hydrogen in a solvent in the presence of a catalyst to obtain 2,4,6-trifluorobenzylamine. The synthesis method has the advantages of low raw material cost, short reaction steps, high reaction yield, good product purity simple operation and the like, and is suitable for industrial production.

A catalytic composition and process for using same. The catalyst may be utilized for an oxidation reaction, for example, for the conversion of mercaptans to disulfides. The catalyst includes a metal component, for example, cobalt phthalocyanine structure. The organic component may comprise any number of different oxidation promoters that are capable of promoting the reduction of oxygen, preferably in a caustic, environment. The organic component may comprise an unsaturated six member ring having at least five carbon atoms, and wherein the sixth member of the six member ring is either C or N, and in which at least two substituent groups are present on the six membered ring.

The present invention relates to an apparatus of manufacturing an aerogel sheet. The apparatus of manufacturing the aerogel sheet includes: a fixing vessel into which a blanket is inserted; and an impregnation device putting a silica sol precursor into the blanket inserted into the fixing vessel to impregnate and gelate the silica sol precursor, wherein the impregnation device includes a rotation roller moving from one end to the other end of a top surface of the blanket while rotating to put the stored silica sol precursor into the blanket and thereby to impregnate and gelate the silica sol precursor.

A titanium oxide film by continuous titanium oxide, includes a metallic compound that has a metal atom and a hydrocarbon group and is bonded to a surface of the film, in which absorption occurs at wavelengths of 450 nm and 750 nm.

Disclosed is a catalyst for use in hydrotreating hydrocarbon feedstocks and methods of making the same catalyst. Specifically, a catalyst is disclosed comprises at least one Group VIB metal component, at least one Group VIII metal component, an organic additive resulting in a C-content of the final catalysts of about 1 to about 30 wt % C, and preferably about 1 to about 20 wt % C, and more preferably about 5 to about 15 wt % C and a titanium-containing carrier component, wherein the amount of the titanium component is in the range of about 3 to about 60 wt %, expressed as an oxide (TiO.sub.2) and based on the total weight of the catalyst. The titanium-containing carrier is formed by co-extruding or precipitating a titanium source with a AI.sub.2O.sub.3 precursor to form a porous support material primarily comprising AI.sub.2O.sub.3 or by impregnating a titanium source onto a porous support material primarily comprising AI.sub.2O.sub.3. Special preference is given to alumina and alumina containing up to and no more than 1 wt % of silica, preferably no more than 0.5 wt % based on the total weight of the support (dry base).

The disclosure provides a synthesis method of 2,4,6-trifluorobenzylamine, belonging to the technical field of chemical synthesis. The synthesis method is characterized by comprising the following steps: (1) allowing pentachlorobenzonitrile as a raw material to undergo fluoridation reaction with a fluoridation agent based on 2,4,6-trifluoro-3,5-dichlorobenzonitrile as a solvent to obtain 2,4,6-trifluoro-3,5-dichlorobenzonitrile; (2) hydrogenating the obtained 2,4,6-trifluoro-3,5-dichlorobenzonitrile with hydrogen in the presence of organic carboxylic acid, based, on palladium carbon as a catalyst to obtain 2,4,6-trifluoro-3,5-dichlorobenzylamine; and (3) hydrogenating the obtained 2,4,6-trifluoro-3,5-dichlorobenzylamine with hydrogen in a solvent in the presence of a catalyst to obtain 2,4,6-trifluorobenzylamine. The synthesis method has the advantages of low raw material cost, short reaction steps, high reaction yield, good product purity simple operation and the like, and is suitable for industrial production.

The present invention relates to a method for manufacturing an aerogel sheet and comprises: a step (a) of impregnating an acid solution into a fiber sheet to clean the fiber sheet by using the acid solution and impregnating a binder solution into the fiber sheet that is cleaned by using the acid solution to manufacture a pre-processed fiber sheet; a step (b) of impregnating a silica precursor into the pre-processed fiber sheet; and a step (c) of a gelling catalyst into the fiber sheet into which the silica precursor is impregnated to gelate the silica precursor.

The disclosure relates to a process for the dimerization of conjugated diene compounds by a heterogeneous catalytic process using a supported palladium catalyst in the presence of at least one palladium activator and at least one palladium coordinating agent.

The present invention relates to a two-stage hydroformylation process for producing pound of the formula (I) and to a process for producing a compound of the formula (V) comprising the two-stage hydroformylation process for producing a compound of the formula (I) followed by hydrogenation of the compound of the formula (I).

##STR00001##

A metatitanic acid particle includes a metal having a hydrocarbon group, which is bonded to a surface of the metatitanic acid particle through an oxygen atom, and absorbs light having a wavelength of 450 nm and light having a wavelength of 750 nm, wherein an element ratio C/Ti between carbon C and titanium Ti in a surface of the metatitanic acid particle is from 0.3 to 1.2, and a reduced amount of C/Ti on the surface of the metatitanic acid particle before and after irradiation with an ultraviolet ray having a wavelength of 352 nm and at an irradiation intensity of 1.3 mW/cm.sup.2 for 20 hours is from 0.1 to 0.9.