摘要:
This invention relates to asymmetric syntheses in which a prochiral or chiral compound is contacted in the presence of an optically active metal-ligand complex catalyst to produce an optically active product.
摘要:
A continuous process for preparing a paste or cream like material which comprises the steps of means for forming under non vacuum conditions at a temperature of 90.degree. F. to 120.degree. F. a first low viscosity homogenous slurry of at least one non aqueous solvent and a gelling or bodying agent; means for forming a second low viscosity homogenous slurry under non vacuum conditions at a temperature of 90.degree. F. to 130.degree. F., means for forming a low viscosity mixture of said first low viscosity slurry and said second low viscosity slurry by a high shear mixing under non vacuum conditions at a temperature of 90.degree. F. to 130.degree. F. for 0.1 to 5 seconds; means for transforming under non vacuum and non mixing conditions at a temperature of 65.degree. F. to 120.degree. F. said low viscosity mixture into a non Newtonian mixture; and means for deaerating said non Newtonian mixture under vacuum conditions for a period of less than 3 seconds to form said paste or cream like material.
摘要:
In a bulk material reactor comprising a reactor housing in which is arranged a travelling bed of 6,6' formed of bulk material 7,7', and a feed device 14-16-17 located on the top side, and a removal device 10 located on the underside of travelling bed 6,6,' as well as a gas inlet opening 2, and a gas outlet opening 3 located on various sides of travelling bed 6,6', the narrowing of gas-flow pathways through transfer device 10 is avoided and uniform flow-through pathways of equal length are provided for the gas flowing through the reactor whereby furthermore, travelling bed 6,6' is bounded along its lower side through staggered transfer plates 10 arranged in a cascade formation between which plates bulk material 7,7' collects to form an angle of repose 11 by means of which the trickling away of bulk material 7,7' is prevented while the system is stopped, whereby such transfer plates 10 can be moved backward and forward in such a way that motion in the transfer plates 10 permits bulk material 7,7' to fall therefrom, and whereby travelling bed 6,6' is designed on its top side with a surface 9 whose slope corresponds to that of staggered sloping transfer plates 10.
摘要:
The present invention concerns a catalyst system and a process for selectively producing alcohols from olefines and synthesis gas. The catalyst system comprises one or several metal cluster compounds belonging to the cobalt group on an inorganic carrier and an amine of the form NR.sub.1 R.sub.2 R.sub.3, where R.sub.1,R.sub.2 and R.sub.3 are either hydrogen or an aliphatic or aromatic group containing 1 to 8 carbon atoms.
摘要:
New crystalline titanium molecular sieve zeolite compositions having a pore size of about 8 Angstrom Units are disclosed together with methods for preparing the same and organic compound conversions.
摘要:
Olefin is etherified with alcohol to provide an ether or mixture of ethers employing catalyst comprising zeolite characterized by an X-ray diffraction pattern including interplanar d-spacings at 12.36+0.4, 11.03+0.2, 8.83.+-.0.14, 6.18.+-.0.12, 6.00.+-.0.10, 4.06.+-.0.07, 3.91.+-.0.07 and 3.42.+-.0.06 Angstroms.
摘要:
This invention relates to catalytic distillation utilizing Lewis acid promoted non-zeolitic inorganic oxide, large pore crystalline molecular sieve and/or ion exchange resin systems. Alkylation and oligomerization processes are adapted to this catalytic distillation technique.
摘要:
Molecular sieve compositions are prepared by extracting aluminum and substituting titanium and/or iron for extracted aluminum to give molecular sieve products containing framework titanium and/or iron atoms. The process of preparing the titanium and/or iron-containing molecular sieves involves contacting a starting zeolite with a solution or slurry of a fluoro salt of titanium and/or iron under effective process conditions to provide for aluminum extraction and substitution of titanium and/or iron.
摘要:
A method and reactor system are described for decomposing organic compounds. A gaseous mixture of organic compounds and water, equal to or in excess of stoichiometry, is passed into a first reaction zone having a temperature range between about 200.degree. C. and 1400.degree. C. The first reaction zone has a labyrinthine path which presents organically adsorbent surfaces to the gaseous mixture to provide a residence time in the first reaction zone sufficient to react substantially all of the gaseous organic compounds and the water at high rate. The effluent from the first reaction zone, still with water equal to or in excess of stoichiometry, is then passed to a second reaction zone having a temperature range between about 750.degree. C. and 1820.degree. C. to decompose the organic compounds remaining in the effluent. The first reaction zone is an annulus which is coaxial with and surrounds the second reaction zone. The labyrinthine path is formed by particulate ceramic material.
摘要:
A method for eluting a metal adsorbed on a chelating agent with an eluent, which comprises using as the eluent an aqueous solution containing a water-soluble inorganic sulfide and a basic compound at concentrations of 0.005 to 3N and 0.1N or more, respectively.