Abstract:
A method comprising providing a halogen stream; providing a first alkane stream; reacting at least a portion of the halogen stream with at least a portion of the first alkane stream to form a halogenated stream, wherein the halogenated stream comprises alkyl monohalides, alkyl polyhalides, and a hydrogen halide; providing a second alkane stream; and reacting at least a portion of the second alkane stream with at least a portion of the alkyl polyhalides to create at least some additional alkyl monohalides.
Abstract:
A process is disclosed that includes brominating a C2, C3, C4, C5 or C6 alkane with elemental bromine to form a bromo-alkane. The bromo-alkane is reacted to form a C2, C3, C4, C5 or C6 alkene and HBr. The HBr is oxidized to form elemental bromine.
Abstract:
This present invention discloses a heterocyclic substituted acardite derivate and application thereof, namely compounds in the general formula (1) or the general formula (2) or pharmaceutically acceptable salts thereof, wherein A is monosubstituted or polysubstituted quinoline, isoquinoline, quinazoline, pyrrole or pyrimidine, and the substituent is halogen, C1-5alkyl, C1-5haloalkyl, C1-5alkoxy, C1-5haloalkoxy, C1-5alkylamino, C1-5haloalkylamino, amino or nitryl; R1 is C1-5alkyl; R2 is one or more selected from hydrogen, halogen, alkyl, alkoxy, haloalkyl or haloalkoxy; and R3 is one or more selected from hydrogen, halogen, alkyl, alkoxy, haloalkyl or haloalkoxy. The compound of the present invention and the pharmaceutically acceptable salt thereof can be used for treating tumor or leukemia.
Abstract:
An improved continuous process for converting methane, natural gas, or other hydrocarbon feedstocks into one or more higher hydrocarbons or olefins by continuously cycling through the steps of alkane halogenation, product formation (carbon-carbon coupling), product separation, and regeneration of halogen is provided. Preferably, the halogen is continually recovered by reacting hydrobromic acid with air or oxygen. The invention provides an efficient route to aromatic compounds, aliphatic compounds, mixtures of aliphatic and aromatic compounds, olefins, gasoline grade materials, and other useful products.
Abstract:
Described herein are compositions and methods for using metal oxides to upgrade oil. Metal oxides may be used as catalysts to reduce the TAN of the oil by converting carboxylic acids such as naphthenic acids into non-corrosive products. In some cases, the conversion occurs by a decarboxylation of the carboxylic acid to produce CO2. A second process promoted by metal oxides is hydrocarbon cracking. Cracking decreases the viscosity and increases the API, and produces lower molecular-weight hydrocarbons that are useful for many fuels and lubricants. Reductions in TAN and the increases in API improve the quality of increase the value of oil.
Abstract:
Disclosed is a detachable pacifier, comprising a limiting device and a pressing device which can be disassembled and assembled with each other, wherein a nipple is arranged below the limiting device, a dustproof cover is arranged outside the pacifier, the limiting device comprises a limiting plate and an annular support portion extending upwards along the limiting plate, an upper edge of the annular support portion is provided with annular clamping portions at intervals, the pressing device comprises a lower end cover, an upper end cover and a pull ring which can be disassembled and assembled with each other, an upper portion of the lower end cover and the lower end cover body form an annular connecting wall, a groove is arranged in the annular connecting wall in the central symmetrical direction, and the pull ring is arranged in the groove. According to the invention, by means of arranging buckles and the clamping portions at a structural matching portion, the assembly of corresponding structures can be completed by aligning and sequentially placing and then pressing and rotating the buckles. Such a structure can be disassembled, mounted and cleaned at any time. By arranging the clamping blocks at the notch of the annular support portion and arranging a limiting block matching the clamping block in the lower end cover, the pacifier can be prevented from being disassembled by infants, and the structure is stable.
Abstract:
The present invention claims a three-truss continuous steel truss girder-pushing device and an arrangement method thereof. The device comprises three supporting structures of left, center and right, the three supporting structures are provided respectively with left and right side truss slideway girders and a middle truss slideway girder. The front ends of the slideway girder are provided with an operating platform where horizontal continuous pushing jacks are installed; the front ends of the left and right slideway girder and the center slideway girder are each provided with four vertical lifting jacks. The three-truss continuous steel truss girder-pushing device simultaneously pushes the two side trusses of the steel truss beam only, while the center truss slides passively, thereby improving construction efficiency and reducing construction costs.
Abstract:
A method comprising providing a halogen stream; providing a first alkane stream; reacting at least a portion of the halogen stream with at least a portion of the first alkane stream to form a halogenated stream, wherein the halogenated stream comprises alkyl monohalides, alkyl polyhalides, and a hydrogen halide; providing a second alkane stream; and reacting at least a portion of the second alkane stream with at least a portion of the alkyl polyhalides to create at least some additional alkyl monohalides.
Abstract:
A method comprising providing a halogen stream; providing a first alkane stream; reacting at least a portion of the halogen stream with at least a portion of the first alkane stream to form a halogenated stream, wherein the halogenated stream comprises alkyl monohalides, alkyl polyhalides, and a hydrogen halide; providing a second alkane stream; and reacting at least a portion of the second alkane stream with at least a portion of the alkyl polyhalides to create at least some additional alkyl monohalides.
Abstract:
A method comprising: providing a first halogen stream; providing a first alkane stream; reacting at least a portion of the first halogen stream with at least a portion of the first alkane stream in a first reaction vessel to form a first halogenated stream; providing a second alkane stream comprising C2 and higher hydrocarbons; providing a second halogen stream; and reacting at least a portion of the second halogen stream with at least a portion of the second alkane stream in a second reaction vessel to form a second halogenated stream.