摘要:
Convert a methylamine (e.g. monomethylamine, dimethylamine and trimethylamine) to a mixture of olefins (e.g. ethylene, propylene and butylene) by placing the methylamine, optionally in a mixture with at least one of ammonia and an inert diluent, in contact with a microporous acidic silicoaluminophosphate catalyst or a microporous aluminosilicate catalyst.
摘要:
A process is disclosed for the production of olefins including ethylene, propylene, and butanes from methyl amine. The process comprises a reaction whereby methyl amine produces the olefin and ammonia by pyrolysis. The reaction is carried out in the gas phase at a temperature in the range of 400° C. to 700° C.
摘要:
Hydrocarbon compounds containing at least one nitrile or amine functional group, e.g., methylglutaronitrile or ortho-toluenediamine, are converted, via hydrodenitrogenation, into ammonia, hydrogen, carbon monoxide and hydrocarbon compounds, notably into hydrocarbon compounds having a low number of carbon atoms, such as methane, or into ammonia.
摘要:
A palladium catalyzed cross-coupling of aryldiazonium salts with organosilanes is disclosed. New reactions that are user friendly and environmentally friendly are now possible, including some reactions that could not be achieved using prior methods. The organosilanes that may be cross-coupled with aryldiazonium salts include, for example, ArnullnullSi(L)3, where Arnullnullaryl, and where LnullCH3, OCH3, F, Cl, R, or OR.
摘要:
A process for heteroatom removal-enhancing hydrogenation of highly refractory aromatic ring structures that involves contacting a highly refractory structure having at least one aryl linkage connecting a first heteroaryl moiety and a moiety selected from the group consisting of an aryl moiety and a second heteroaryl moiety with supercritical water having a temperature of from about 400.degree. C. to about 600.degree. C. in the presence of from about 3.4 MPa to about 18.6 MPa of CO to produce lower molecular weight products having decreased aromatic and heteroatom content. The process has utility for producing more valuable lower molecular weight products having a reduced aromatic heteroatom content from starting materials that are highly refractory and widely considered to be difficult to upgrade such as coals and asphaltenes, and model compounds containing the biaryl linkages.
摘要:
Processes are disclosed for preparing [2.2] paracyclophane and derivatives thereof by conducting the Hofmann elimination of p-methylbenzyltrimethylammonium hydroxide, or derivatives thereof, in the presence of an effective amount of oxygen to inhibit the formation of by-product polymers. The oxygen can be introduced, for example, by a purge gas stream containing molecular oxygen. Products produced by the processes are also disclosed.
摘要:
Diarylacetylenes and diarylenamines are synthesized from a Schiff's base and an N-arylmethylheterocycle; these compounds are useful as intermediates for a variety of polymers; in particular an efficient process is provided for producing diaryl acetylenes useful in the efficient production of acetylene group-containing polymers which can be cross-linked to produce high strength polymers free of structural defects such as conventionally arise as a result of liberation of volatiles during the cross-linking.