摘要:
In a process for converting methane to liquid hydrocarbons, a feed containing methane is contacted with 0 de-hydrocyclization catalyst under conditions effective to convert said methane to aromatic hydrocarbons, including benzene and/or naphthalene, and produce a first effluent stream comprising hydrogen and 0t least 5 wt % m>35 aromatic hydrocarbons than said feed. At least part the aromatic hydrocarbons from the first effluent stream is then reacted with hydrogen to produce a second effluent stream having a reduced benzene and/or naphthalene content compared with said first effluent stream.
摘要:
In a process for converting methane to alkylated aromatic hydrocarbons, a feed containing methane is contacted with a dehydrocyclization catalyst under conditions effective to convert said methane to aromatic hydrocarbons and produce a first effluent stream comprising aromatic hydrocarbons and hydrogen. At least a portion of said aromatic hydrocarbon from said first effluent stream is then contacted with an alkylating agent under conditions effective to alkylate said aromatic hydrocarbon and produce an alkylated aromatic hydrocarbon having more alkyl side chains than said aromatic hydrocarbon prior to the alkylating.
摘要:
In a process for converting methane to higher hydrocarbons including aromatic hydrocarbons, a feed containing methane is contacted with a dehydrocyclization catalyst under conditions effective to convert said methane to aromatic hydrocarbons and produce a first effluent stream comprising aromatic hydrocarbons and hydrogen, wherein said first effluent stream comprises at least 5 wt % more aromatic hydrocarbons than said feed. At least part of the hydrogen from said first effluent stream is then reacted with an oxygen-containing species, such as carbon dioxide, to produce a second effluent stream having a reduced hydrogen content compared with said first effluent stream.
摘要:
A process for converting methane to higher hydrocarbon(s) including aromatic hydrocarbon(s) in a reaction zone comprises providing to a hydrocarbon feedstock containing methane and a catalytic particulate material to the reaction zone and contacting the catalytic particulate material and the hydrocarbon feedstock in a substantially countercurrent fashion in the reaction zone, while operating the reaction zone under reaction conditions sufficient to convert at least a portion of said methane to a first effluent having said higher hydrocarbon(s).
摘要:
Disclosed herein is a system for allowing a remote user to purchase, over a distributed computer network (e.g., the Internet), an option for a ticket and/or accommodations for a ‘contingent event”, e.g., an event which is certain to occur but for which the participants, content and/or location(s) are not predetermined. For instance, the subject system can be used to sell options for the purchase of tickets to such contingent events such as playoff games on the basis of what teams qualify, or all-star game.
摘要:
Disclosed herein is a system for allowing a remote user to purchase, over a distributed computer network (e.g., the Internet), an option for a ticket and/or accommodations for a “contingent event”, e.g., an event which is certain to occur but for which the participants, content and/or location(s) are not predetermined. For instance, the subject system can be used to sell options for the purchase of tickets to such contingent events such as playoff games on the basis of what teams qualify, or all-star game.
摘要:
The present invention provides a fuel composition comprising a fuel and a film-forming additive wherein the fuel comprises diesel and a fuel alcohol and wherein the film-forming additive is present in the fuel composition in an amount of less than 0.1 wt %.
摘要:
The invention provides a steering column assembly (10) having a first steering column member (12) with an upper end (14) and a mounting feature (16). The mounting feature (16) is operative to support against rotation relative to a vehicle and includes first and second mounting portions (30, 32). The steering column assembly (10) also includes a second steering column member (18) having a lower end (20). The second steering column member (18) is operatively connected to the first steering column member (12) for telescoping movement along a column axis (22). The steering column assembly (10) also includes a first bushing (24) connected to the upper end (14) and disposed between the first steering column member (12) and the second steering column member (18) for supporting the telescoping movement. The steering column assembly (10) also includes a second bushing (26) connected to the lower end (20) and disposed between the first steering column member (12) and the second steering column member (18) for supporting the telescoping movement. The second bushing (26) is disposed between the first and second mounting portions (30, 32) along the column axis (22).
摘要:
There is provided a catalyst composition having improved hydrothermal stability for the catalytic cracking of a hydrocarbon feedstock to selectively produce propylene. The catalyst composition comprises a first crystalline molecular sieve selected from the group consisting of IM-5, MWW, ITH, FER, MFS, AEL, and AFO and an effective amount of a stabilization metal (copper, zirconium, or mixtures thereof) exchanged into the molecular sieve. The catalyst finds application in the cracking of naphtha and heavy hydrocarbon feedstocks. When used in the catalytic cracking of heavier hydrocarbon feedstocks, the catalyst composition preferably comprises a second molecular sieve having a pore size that is greater than the pore size of the first molecular sieve. The process is carried out by contacting a feedstock containing hydrocarbons having at least 4 carbon atoms is contacted, under catalytic cracking conditions, with the catalyst composition.
摘要:
The invention described herein relates to the detection, diagnosis, and treatment of intestinal metaplasias that develop to esophageal, gastric, and pancreatic adenocarcinoma. The stem cells and differentiated cells of these intestinal metaplasias show high expression of CDH17 as well as other proteins. The invention also includes a clonal population of Barrett's esophagus stem cells as well as the stem cells of the surrounding normal epithelia and methods of using them for the detection, diagnosis, and treatment of Barrett's esophagus.