Nova Chemicals (International) S.a.

University of Alberta

Alberta Research Council Incorporated

Nova Chemicals Inc.

Nova Husky Research Corporation

Andrzej Z Krzywicki

Michael C Oballa

Haiyong Cai

Xiaoliang Gao

Leslie Wilfred Benum

Leonid Modestovich Kustov

Aleksey Victorovich Kucherov

Elena Dmitrievna Finashina

Stacy David Ross Johnston

Vasily Simanzhenkov

Stephen John Brown

Karl T Chuang

P Scott Chisholm

Charles Ashton Garret Carter

Eric Clavelle

Yves Lacombe

Kamal Elias Serhal

Isam Jaber

Alan Rodney Sanger

Ian Ronald Jobe

Antonio Pietro Nicola

Leszek Lewkowicz

David Purvis

Vernon Lindsay Strom

Sunny Ying-Shing Wong

Russell Kirk Archer

Abdul Alim Fakih

Keith WAyne Besenski

Ted Magtanong

Michel Berghmans

Mackenzie Alexander Harris

Anthony Tse

Les Benum

Oleksiy Golovchenko

Dale Alexander Sieben

Tatyana Nikolaevna Kucherova

Vera Ilynichna Isaeva

Jing-li Luo

Xian-zhu Fu

Nemanja Danilovic

Anita Sylvia Magis

Alexandra Kalivoda

The oligomerization of ethylene using a chromium catalyst having a heteroatomic ligand may be used to provide oligomerization products that are selective towards hexene and/or octene. However, such processes also typically produce some polymer as an undesirable by product. The present invention is directed towards improvements in the selective oligomerization of ethylene.

Heat management in ethylene oligomerization

The present invention provides a process for the manufacture of an efficient and robust catalyst for the oxidative dehydrogenation of paraffins to olefins, preferably lower Cparaffins. The present invention provides a process for the preparation of an oxidative dehydrogenation catalyst of Cparaffins to olefins comprising comminuting: from 10 to 99 weight % of a mixed oxide catalyst of the formula VMoNbTeMeO, wherein Me is a metal selected from the group consisting of Ta, Ti, W, Hf, Zr, Sb and mixtures thereof; with from 90 to 1 weight % of an inert matrix selected from oxides of titanium, zirconia, aluminum, magnesium, yttria, lantana, silica and their mixed compositions or a carbon matrix to produce particles having a size from 1 to 100 microns and forming the resulting particles into pellets having a size from 0.1 to 2 mm.

Supported oxidative dehydrogenation catalyst

The present invention provides a continuous process for the oxidative dehydrogenation of ethane to ethylene using a mixed oxide catalyst supported onto a ceramic membrane by supplying an oxygen containing gas (air or pure oxygen) and pure ethane to the opposite sides of the membrane, so that the paraffin and the oxygen do not directly mix in the reactor.

Membrane-supported catalysts and the process of oxidative dehydrogenation of ethane using the same

Anode catalysts for conversion of hydrocarbon feeds in solid oxide fuel cell membrane reactors. An anode catalyst may be a mixture of a metal with a metal oxide, for example a mixture of copper or copper-nickel alloy or copper-cobalt alloy with CrO. Mixed oxides can be prepared by dissolving into water soluble salts of the different metals, chelating the metal ions with a chelating agent, neutralizing the solution, removing water by evaporation to form a gel which then is dried, and finally heating the dried gel to form a mixed oxide of the different metals. The chelating agent can be citrate ions, and ammonia can be added to the solution until the pH of the solution is about 8. The mixed oxide so formed then is reduced, for example by hydrogen, to form a composite comprising the metal (Cu, Cu&#x2014;Co, Cu&#x2014;Ni) and metal oxide, here CrO. Typically, the composite oxides so formed comprise approximately spherical nanoparticles, and the reduced composites are nanoparticles comprising very small particles of the metal within a network of the oxide, CrO.

Anode catalysts for fuel cell membrane reactors

Alkadienes may be telomerized in the presence of a heterogeneous catalyst comprising an alumina or titania support which is modified with one or more ionic complexes of Pd or Pt and activated at a temperature from 450&#xb0; C. to 850&#xb0; C. for a time not less than two hours. The resulting telomere may be useful in a number of applications.

Telomerization of dienes

1-Ethers may be cracked over untreated &#x3b3;-alumina having a pore volume of more than 1.0 cc/g and an average pore diameter of more than 150 angstroms (&#x212b;) at a temperature from 250 to 350&#xb0; C. and a pressure from 10 to 200 kPa at high conversions and good selectivity to produce the corresponding 1-alkene. The process is particularly useful to produce 1-octene from 1-methoxyoctane.

Cracking 1-ethers over unmodified &#x3b3;-alumina

An aromatics/naphthalene rich stream obtained by processing heavy gas oil derived from tar sands and cycle oils derived from cracking heavy gas oil may optionally be blended and subjected to a hydrogenation process and a ring opening reaction typically in the presence of a zeolite, alumina, or silica alumina based catalyst which may contain noble metals and or copper or molybdenum to produce paraffinic feedstocks for further chemical processing.

Integrated process to convert heavy oils from oil sands to petrochemical feedstock

Ethers are cracked to olefins using a gamma-alumina catalyst in the presence of ammonia. The use of ammonia improves the selectivity to linear alpha olefins in comparison to cracking reactions in the absence of ammonia. The use of ammonia is convenient in comparison to known processes which employ alumina which as been treated with an amine. A preferred process produces octene-1 from 1-methoxyoctane.

Conversion of ethers to olefins

The present invention provides a process to treat steels, preferably carbon steel to reduce the tendency of the steel to form coke when in contact with hydrocarbons at elevated temperatures. The steel may be first reduced then treated with a mixture of compounds which further modify the reduced surface and finally the treated steel surface is cured. The treated steel has a reduced propensity to form coke when in contact with hydrocarbons particularly at higher temperatures.

Passivation of steel surface to reduce coke formation

In a steam cracking operation the formation of coke is a problem which needs to be overcome. While significant work has been done on decoking of furnaces little work has been done regarding transfer line exchangers. Coking of transfer line exchangers (TLE) may be reduced by injection of a solution containing at least one group 1 or 2 metal dichromate or dichromate and one or more of a group 1, 2 or 7 metal carbonate into the TLE.

Decoke enhancers for transfer line exchangers

A combined chain of a high temperature, high conversion steam cracker in combination with a polymerization or oligomerization unit provides capital and operating cost reduction.

Integrated high temperature high conversion olefin/polyolefin process

A method for prolonging a hydroconversion catalyst life-time is provided. An additive functional to partially redirect the deposition of catalytic poisoning agents on the catalyst is utilized. The additive may comprise a chemically inert, porous carbonaceous material or ferruginous clay.

Method for extending hydroconversion catalyst life

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Calgary, Canada

Andrzej Z Krzywicki