Abstract: A catalyst bed configuration, in particular for olefin conversion by metathesis, comprising at least one main catalyst bed comprising a) at least one first catalyst component comprising a metathesis catalyst, and b) at least one second catalyst component comprising a catalyst for double bond isomerization, whereby the first and second catalyst are intimate mixed with each other, and at least one catalyst pre-bed arranged upstream of the at least one main catalyst bed comprising at least one compound selected from the group of alkaline earth oxides. The mass ratio of the at least one catalyst pre-bed to the at least one main catalyst bed is between 1:2 and 2.5:1, preferably between 1:1.5 and 2.5:1, more preferably between 1:1 and 2.5:1, most preferably between 1:1 and 2:1.

Abstract: The present invention relates to the use of magnesium oxide (MgO) as catalyst for isomerisation of olefins with defined physical properties, a catalyst for olefin metathesis comprising said MgO and a process for olefin metathesis using said catalyst.

Abstract: The present invention relates to a process for obtaining an olefin by metathesis including the steps of i) feeding at least one stream with at least one olefin as starting material to at least one first reactor with at least one pre-bed having at least one compound selected from the group of alkaline earth oxides and ii) feeding the stream leaving the at least one first reactor to at least one second reactor downstream to the at least one first reactor including at least one main bed having a) at least one first catalyst component and b) at least one second catalyst component. The first and second catalyst are physically mixed with each other. The operational temperature of the at least one first reactor is lower than the operational temperature of the at least one second reactor.

Abstract: A process for obtaining an olefin by metathesis including at least two reaction pathways. In at least one first reaction pathway at least one stream with at least one olefin as starting material is fed to at least one first pre-bed reactor with at least one pre-bed having at least one compound selected from the group of alkaline earth metal oxides. The stream leaving the at least one first pre-bed reactor is subsequently fed to at least one main catalyst bed reactor downstream of the at least one first pre-bed reactor including at least one main catalyst bed with at least one first catalyst component comprising a metathesis catalyst, and at least one second catalyst component comprising a catalyst for double bond isomerization, whereby the first and second catalyst are physically mixed with each other.

Abstract: The present invention relates to a process for obtaining an olefin by metathesis comprising feeding at least one stream comprising at least one olefin as starting material to at least one reactor comprising at least one main catalyst bed comprising a) at least one first catalyst component comprising a metathesis catalyst, and b) at least one second catalyst component comprising a catalyst for double bond isomerization, whereby the first and second catalyst are physically mixed with each other, wherein the at least one stream comprising at least one olefin as starting material is co-fed with hydrogen gas in a concentration range between 0.01 Vol % and 0.2 Vol % in respect to the total gas amount in the stream, and the metathesis process is conducted in the at least one reactor at a pressure between 0.1 MPa and 3.0 MPa and at a temperature between 250° C. and 300° C.

Abstract: The present invention relates to a catalyst bed configuration for conversion of olefins comprising i) at least one main catalyst bed comprising a) at least one first catalyst component comprising a metathesis catalyst, and b) at least one second catalyst component comprising a catalyst for double bond isomerization, and ii) at least one catalyst pre-bed arranged upstream of the at least one main catalyst bed comprising at least one compound selected from the group of alkaline earth oxides. The at least one compound used as catalyst pre-bed and selected from the group of alkaline earth oxides is subjected to a pre-treatment before arranging said at least one compound used as catalyst pre-bed upstream of the at least one main catalyst bed, wherein the pre-treatment comprises at least one cycle comprising successive treatment in an oxidizing and reducing atmosphere.

Abstract: The present invention relates to a magnesium oxide (MgO) catalyst for isomerisation of olefins with defined physical properties. The present invention further relates to a catalyst for conversion of olefins having a first catalyst component and a second catalyst component. The first catalyst component has a metathesis catalyst. The second catalyst component has the magnesium oxide catalyst. A process for obtaining an olefin is also disclosed.

Abstract: Process for treating a zeolite catalyst for the carbonylation of dimethyl ether to produce methyl acetate, in which the catalyst is contacted with a treatment gas containing water vapor in an amount of at least 1 mol % and at a temperature below which dealumination of the zeolite structure occurs. The zeolite contains at least one channel which is defined by an 8-member ring and is mordenite.

Abstract: The present invention relates to a process for obtaining an olefin by metathesis comprising feeding at least one stream comprising at least one olefin as starting material to at least one reactor comprising at least one main catalyst bed comprising a) at least one first catalyst component comprising a metathesis catalyst, and b) at least one second catalyst component comprising a catalyst for double bond isomerisation, whereby the first and second catalyst are physically mixed with each other, wherein the at least one stream comprising at least one olefin as starting material is co-fed with hydrogen gas in a concentration range between 0.01 Vol % and 0.2 Vol % in respect to the total gas amount in the stream, and the metathesis process is conducted in the at least one reactor at a pressure between 0.1 MPa and 3.0 MPa and at a temperature between 250° C. and 300 ° C.

Abstract: A process for obtaining an olefin by metathesis including at least two reaction pathways. In at least one first reaction pathway at least one stream with at least one olefin as starting material is fed to at least one first pre-bed reactor with at least one pre-bed having at least one compound selected from the group of alkaline earth metal oxides. The stream leaving the at least one first pre-bed reactor is subsequently fed to at least one main catalyst bed reactor downstream of the at least one first pre-bed reactor including at least one main catalyst bed with at least one first catalyst component comprising a metathesis catalyst, and at least one second catalyst component comprising a catalyst for double bond isomerisation, whereby the first and second catalyst are physically mixed with each other.

Abstract: The present invention relates to a catalyst bed configuration for conversion of olefins comprising i) at least one main catalyst bed comprising a) at least one first catalyst component comprising a metathesis catalyst, and b) at least one second catalyst component comprising a catalyst for double bond isomerisation, and ii) at least one catalyst pre-bed arranged upstream of the at least one main catalyst bed comprising at least one compound selected from the group of alkaline earth oxides. The at least one compound used as catalyst pre-bed and selected from the group of alkaline earth oxides is subjected to a pre-treatment before arranging said at least one compound used as catalyst pre-bed upstream of the at least one main catalyst bed, wherein the pre-treatment comprises at least one cycle comprising successive treatment in an oxidizing and reducing atmosphere.

Abstract: The present invention relates to a magnesium oxide (MgO) catalyst for isomerisation of olefins with defined physical properties. The present invention further relates to a catalyst for conversion of olefins having a first catalyst component and a second catalyst component. The first catalyst component has a metathesis catalyst. The second catalyst component has the magnesium oxide catalyst. A process for obtaining an olefin is also disclosed.

Abstract: The present invention relates to a process for obtaining an olefin by metathesis including the steps of i) feeding at least one stream with at least one olefin as starting material to at least one first reactor with at least one pre-bed having at least one compound selected from the group of alkaline earth oxides and ii) feeding the stream leaving the at least one first reactor to at least one second reactor downstream to the at least one first reactor including at least one main bed having a) at least one first catalyst component and b) at least one second catalyst component. The first and second catalyst are physically mixed with each other. The operational temperature of the at least one first reactor is lower than the operational temperature of the at least one second reactor.

Abstract: A process for treating a zeolite catalyst for the carbonylation of dimethyl ether to produce methyl acetate in which the catalyst is contacted with a treatment gas comprising water vapour in an amount of at least 1 mol % and at a temperature below which dealumination of the zeolite structure occurs.

Abstract: A pet food bowl having an internal food dish surrounded by a reservoir adapted to hold a liquid therein and an overlying shroud extending over the reservoir and spaced from an outer wall of said reservoir, wherein said the shroud includes a face extending over a reservoir surface and outermost skirt extending around and spaced from an outermost reservoir wall.

Abstract: A new process for producing a SAPO molecular sieve is disclosed wherein a mixture of a P source with an Al source is subjected to a digestion step under stirring before adding a Si source and a template. The slurry resulting after addition of all chemicals is subjected to a pH adjustment followed by the usual hydrothermal treatment at higher temperature in an autoclave. In this way, very pure highly crystalline SAPO molecular sieves such as SAPO-34 are obtained with a very high yield. In addition, the SAPOs produced this way have an exceptional activity in the dehydration reactions and can be employed as a active component of catalysts for the production of valuable dehydration products from methanol such as, but not limited to, olefins and dimethylether (DME).

Abstract: A pet food bowl having an internal food dish surrounded by a reservoir adapted to hold a liquid therein and an overlying shroud extending over the reservoir and spaced from an outer wall of said reservoir, wherein said the shroud includes a face extending over a reservoir surface and outermost skirt extending around and spaced from an outermost reservoir wall.

Abstract: A new process for producing a SAPO molecular sieve is disclosed wherein a mixture of a P source with an Al source is subjected to a digestion step under stirring before adding a Si source and a template. The slurry resulting after addition of all chemicals is subjected to a pH adjustment followed by the usual hydrothermal treatment at higher temperature in an autoclave. In this way, very pure highly crystalline SAPO molecular sieves such as SAPO-34 are obtained with a very high yield. In addition, the SAPOs produced this way have an exceptional activity in the dehydration reactions and can be employed as a active component of catalysts for the production of valuable dehydration products from methanol such as, but not limited to, olefins and dimethylether (DME).

Abstract: A method and system to select, schedule, purchase, confirm, invoice, bill and settle service orders, such as home services orders from customers. The method and system accept electronic service orders as well as customer leads for services, selects service providers and schedule services in real-time via a computer network, confirms scheduling of service delivery in real-time, handles administrative and business details for both customers and service providers, as well as fulfills, tracks and settle service orders. The method and system also provide customized information for services available via an electronic services network and dynamically schedule services using plural electronic appointment calendars from plural service providers. The method and system includes customer service order and customer lead information and enterprise-wide visibility and management of business processes. The method and system may also be used for goods.

Abstract: The present development relates to a catalyst composition for the selective hydrogenation of acetylene and to a method for preparing the catalyst. The catalyst comprises iridium, palladium and, optionally, at least one of the elements selected from the group consisting of silver, gold, copper, zinc and tin. In a preferred embodiment, the catalyst is prepared such that the palladium is located within the first 250 micrometers of the surface of the catalyst carrier. In contrast to the catalysts of the prior art, including for example, palladium/silver catalysts, the catalyst of the present invention exhibits high selectivity and an improved stability of the catalytic performance over an extended period of time.