摘要:
Disclosed is a method of producing an organic compound. The method uses a metathesis catalyst in a coupling reaction of an olefin. The method comprises the steps of introducing the olefin into a container; either placing the container under vacuum or bubbling a gas through the olefin; adding an additive with the olefin; mixing the olefin and the additive, the mixing creating a mixture; adding an amount of the metathesis catalyst to the mixture, the amount being less than about 100 ppm by weight of the mixture; and optionally heating the mixture to a temperature, the temperature being greater than room temperature.
摘要:
The present invention is concerned with a catalyst composition comprising titanium-, zirconium- and/or hafnium amidinate complexes and/or titanium-, zirconium- and/or hafnium guanidinate complexes and organo aluminium and/or organo zinc compounds, a coordinative chain transfer polymerization (CCTP) process employing the catalyst composition as well as long chain aluminium alkyls and subsequent alcohols obtained by such process.
摘要:
Generally, regenerable, encapsulated metal oxide catalysts comprising a ceramic matrix and metal catalysts may be used to convert alkanes to alkenes. The encapsulated metal oxide catalyst may be tailored to produce a variety of alkenes including ethylene, butylene, and propylene. Further, the encapsulated metal oxide catalysts advantageously allow for regeneration and reactant recovery for cost effective and environmentally friendly processes.
摘要:
The present invention provides curable compositions comprising non-Sn organo-metal catalysts that accelerate the condensation curing of moisture curable silicones/non-silicones. In particular, the present invention provides Fe(III) and Bi(III) complexes that are particularly suitable as replacements for organotin for sealant and RTV formulations. The Fe(III) and Bi(III) complexes are comparable or superior to organotin such as DBTDL and exhibit certain behavior in the presence of components that allow for tuning or adjusting the cure characteristics of the present compositions and provide good adhesion and storage stability.
摘要:
Disclosed is a method for preparing a dinitrile compound. The method includes reacting an alcohol compound with a nitrile compound having a terminal carbon-carbon unsaturated bond under anhydrous conditions. A potassium alkoxide having 1 to 5 carbon atoms is used as a catalyst in the course of the reaction. According to the method, a high-purity dinitrile compound can be prepared in a simple manner within a short reaction time indicating high productivity.
摘要:
The disclosure provides for metal catecholate frameworks, and methods of use thereof, including gas separation, gas storage, catalysis, tunable conductors, supercapacitors, and sensors.
摘要:
Process for preparation of a supported catalyst based on hydroxylated inorganic material selected from the group consisting of silica (SiO 2 ), alumina (Al 2 O 3 ), titania (TiO 2 ), zirconia (ZrO 2 ), lanthanum oxide (La 2 O 3 ) or mixtures thereof, characterized in that the hydroxylated inorganic material is contacted with organosilicon compounds selected from the group consisting of Formula 1 i.e., [(RO) y Si-[O-(RO) y Si] y -O-Si(RO) y ] or Formula 2 i.e., (RO) y -Si-R 1 -S 2-4 -R 1 -Si-(RO) y with R being alkyl and R 1 being a linear or branched alkylene having from 1 to 5 carbon atoms and y being an integer from 1 to 3.