摘要:
Disclosed herein is a catalyst composition for transalkylation of alkylaromatic hydrocarbons which exhibits the percent conversion of ethyltoluene higher than 50 wt %, is composed of mordenite (100 pbw), inorganic oxide and/or clay (25-150 pbw), and at least one metal component of rhenium, platinum, and nickel, and contains mordenite such that the maximum diameter of secondary particles of mordenite is smaller than 10 &mgr;m. Disclosed also herein is a process for producing xylene by the aid of said catalyst from alkylaromatic hydrocarbons containing C9 alkylaromatic hydrocarbons containing more than 5 wt % ethyltoluene and less than 0.5 wt % naphthalene, in the presence of hydrogen.
摘要:
An adsorbing and separating agent for halogenated aromatic compounds and an adsorbing and separating method for the compounds, using an adsorbent which has a porosity of from 0.20 cc/cc to 0.37 cc/cc, a packing density of from 0.50 g/ml to 0.70 g/ml, and a grain size of from 0.1 mm to 1.0 mm.
摘要:
A mixture of xylene isomers containing ethyl benzene is contacted with a catalyst comprising a mordenite type zeolite and rhenium or phosphorus in the presence of hydrogen to isomerize xylenes and at the same time dealkylate ethyl benzene into mainly benzene.
摘要:
A process for conversion of organic compounds including contacting a catalyst formed from a CFI-type zeolite including an atomic ratio of silicon to a heteroatom of 45 or less, and long axes of crystals of 0.7 μm or less with the organic compounds.
摘要:
A CFI-type zeolite where the atomic ratio of silicon to the heteroatom is 45 or less and the long axes of the crystals are 0.7 &mgr;m or less is useful as a catalyst for conversion reaction of aromatic compounds because the zeolite has a number of active sites and small crystals.
摘要:
Xylenes containing ethylbenzene are contacted with a catalyst comprising an acid type mordenite and a specific acid type zeolite such as, for example, ZSM-5, ZSM-8 or ZSM-11, in vapor phase in the presence of hydrogen, whereby there are performed deethylation of ethylbenzene and isomerization of xylenes.
摘要:
An adsorbent for separating para-isomers from C.sub.8 or C.sub.10 aromatic hydrocarbons, specifically, a faujasite zeolite wherein about 2.5 to 25 percent, based on the total exchangeable cation sites originally present within the faujasite zeolite, is decationized and metal ions at the residual cation sites are exchanged substantially with potassium and/or barium ions. The adsorbent is used in separating the para-isomer, which is isolated by desorbing from the adsorbent.
摘要:
A process for isomerizing trichlorobenzene is disclosed. In the process of the present invention, a mixture of trichlorobenzene isomers containing 1,3,5-trichlorobenzene and/or 1,2,3-trichlorobenzene in small concentrations is contacted with a catalyst including acid type mordenite zeolite or acid type beta zeolite and a rhenium component and/or silver component in liquid phase in the presence of hydrogen, thereby increasing concentrations of 1,3,5-trichlorobenzene and/or 1,2,3-trichlorobenzene in said mixture.
摘要:
A catalyst in which X-ray diffraction intensity ratio of the crystal lattice plane spacing d-value of 0.196±0.002 nm to the crystal lattice plane spacing d-value of 0.386±0.008 nm is in a range from 7:100 to 35:100 and a process for making the catalyst to contact with ethylbenzene containing xylenes in the presence of hydrogen.
摘要:
A catalyst composition with a high halogenated aromatics isomerization activity, a halogenated aromatic isomerization method using said catalyst composition, and a halogenated aromatics isomerization method capable of prolonging the life or regeneration period of the catalyst. The invention also includes a catalyst composition characterized in that the maximum diameter of secondary particles of the zeolite in the formed catalyst is 5 microns or less is used to improve the halogenated aromatics isomerization activity. Furthermore, if dissolved oxygen is decreased, the life or regeneration period of the catalyst can be prolonged.