The Phillips catalyst, or the Phillips supported chromium catalyst, is the catalyst used to produce approximately half of the world's polyethylene. A heterogeneous catalyst, it consists of a chromium oxide supported on silica gel.[1] Polyethylene, the most-produced synthetic polymer, is produced industrially by the polymerization of ethylene:
n C2H4 → (C2H4)n
Although exergonic (i.e., thermodynamically favorable), the reaction requires catalysts. Three main catalysts are employed commercially: the Phillips catalyst, Ziegler–Natta catalysts (based on titanium trichloride), and, for specialty polymers, metallocene-based catalysts.
^Max P. McDaniel "A Review of the Phillips Supported Chromium Catalyst and Its Commercial Use for Ethylene Polymerization" Advances in Catalysis, 2010, Volume 53, p. 123. doi:10.1016/S0360-0564(10)53003-7
The Phillipscatalyst, or the Phillips supported chromium catalyst, is the catalyst used to produce approximately half of the world's polyethylene. A...
a catalyst support is a material, usually a solid with a high surface area, to which a catalyst is affixed. The activity of heterogeneous catalysts is...
(CH3(CH2)10COO)2Sn((CH2)3CH3)2 is a dibutylstannylene ester of lauric acid, and the Phillipscatalyst CrO2(OSi(OCH3)3)2 is a trimethoxysilyl ester of chromic acid (H2CrO4)...
compounds that worked at even milder conditions than the Phillipscatalyst. The Phillipscatalyst is less expensive and easier to work with, however, and...
harmful NOx emissions, a twin-catalyst system was developed in the seventies - this added a separate (rhodium/platinum) catalyst which reduced NOx ahead of...
Several chromium compounds are used as catalysts for processing hydrocarbons. For example, the Phillipscatalyst, prepared from chromium oxides, is used...
concentrations needed for industrial processes. Platinum was originally used as the catalyst for this reaction; however, as it is susceptible to reacting with arsenic...
polyethylene, chromium-containing Phillipscatalysts are used often. Kaminsky catalysts are yet another family of catalysts that are amenable to systematic...
ConocoPhillips, is named Phillips 66, the brand name and trademark used by the original Phillips Petroleum from 1930 until the 2002 ConocoPhillips merger...
and cation (e.g Na4Cr(CO)4). Chromium catalysts are important in ethylene polymerization. The Phillipscatalyst is prepared by impregnating chromium(VI)...
have been reported that can polymerize ethene, akin to the Phillipscatalyst. The catalyst can be easily activated with trimethylaluminum and typically...
approximately 1:05 PM Central Daylight Time, a series of explosions occurred at Phillips Petroleum Company's Houston Chemical Complex in Pasadena, Texas, near the...
only manufactures polyethylene. Texas portal Chevron PhillipsPhillips Disaster of 1989 Phillips explosion of 1999 "The Aftermath of a Deadly Explosion:...
2019. Phillips, Tom (July 17, 2019). "Luigi's Mansion 3 gets the spookiest release date possible". Eurogamer. Retrieved July 27, 2019. Phillips, Tom (January...
September 1904, Phillips is part of the Chicago Public Schools district and is managed by the Academy for Urban School Leadership. Phillips is named for...
the Phillips triolefin or olefin conversion technology, propylene is interconverted with ethylene and 2-butenes. Rhenium and molybdenum catalysts are...
often coloured. They form many useful alloys and are often employed as catalysts in elemental form or in compounds such as coordination complexes and oxides...
olefin metathesis, researchers at Phillips Petroleum Company in 1964 described olefin disproportionation with catalysts molybdenum hexacarbonyl, tungsten...
Ziegler-Natta catalysts. The first group of the catalysts encompasses solid (mostly supported) catalysts and certain types of soluble metallocene catalysts. Such...
situ catalyst regeneration. Instead, when needed, the aged catalyst was replaced by fresh catalyst and the aged catalyst was shipped to catalyst manufacturers...
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