摘要:
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 use, wherein the pre-treatment comprises at least one cycle comprising successive treatment in an oxidizing and reducing atmosphere.
摘要:
The present invention relates to a device for purifying water, in particular for pre-purifying seawater, comprising at least one container (10) for accommodating water mixed with at least one flocculation agent in order to removed organic and possibly biological constituents contained in the water, wherein the at least one container (10) comprises at least one contact zone K for contacting the water mixed with the flocculation agent with at least one gas, in particular air, and at least one separation zone S for removing the organic constituents driven up by the gas, wherein the at least one gas-introduction unit (30) is arranged in the at least one contact zone K and at least one filtration unit (40) is arranged in the at least one separation zone S. The at least one gas is injected by means of the at least one gas-introduction unit (30) without using a liquid carrier. The invention further relates to a method for purifying water using said device.
摘要:
Infection-inhibiting compositions suitable for coating surfaces of implantable medical implants, including compositions and devices for coating medical devices in the operating room prior to implantation in a patient. Methods for inhibiting infection at the site of implantation of an orthopedic device in a human or animal subject, comprise rubbing a surface of the device, prior to implantation, with an infection-inhibiting composition having a waxy matrix comprising an infection-inhibiting material selected from the group consisting of a lipid, an antimicrobial agent, and mixtures thereof, wherein a thin layer of the infection-inhibiting material is deposited on the surface of the device. Medical implants which may be treated in the methods of this technology include orthopedic implants. Lipids include long-chain diacylglycerides or triacylglycerides, which may be saturated or unsaturated, such as lecithin or a purified form of phosphatidylcholine.
摘要:
The present invention relates to 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 isomerisation, 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, whereby 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. The invention relates further to a reactor containing said catalyst compositions and a process for obtaining an olefin using said reactor and said composition.
摘要:
The present invention provides a process for manufacturing polyethylene-diene-copolymer conducted in a plant comprising at least one compressor unit (10), at least one preheater unit (20) being downstream of the compressor unit (10) and at least one reactor (30), in particular a reactor, being downstream of the compressor unit (10) and the preheater unit (20) a) Feeding a first feed stream (1) comprising ethylene into the at least one compressor unit (10) and subsequently into the at least one preheater unit (20), b1) Feeding a second feed stream (2) comprising at least one diene comonomer to the first feed stream (1) leaving the at least preheater unit (20), and feeding the combined feed streams (4) comprising ethylene and the at least one diene comonomer to the at least one reactor (30), and/or b2) Feeding a second feed stream (2) comprising at least one diene comonomer to the at least one reactor (30) at at least one location along the reactor (30).
摘要:
Die vorliegende Erfindung betrifft eine Holzwerkstoffplatte (1) mit mindestens einer Trägerplatte (2a), wobei die mindestens eine Trägerplatte aus einem Gemisch aus Holzpartikel und Lederpartikel besteht, und mindestens einer auf einer Seite der Trägerplatte (2a) angeordneten Verschleißschicht (4). Die Erfindung betrifft ebenfalls eine Holzwerkstoffplatte (1) umfassend mindestens eine Trägerplatte (2b), mindestens eine auf einer Seite der Trägerplatte (2b) angeordnete Schicht umfassend Lederpartikel (3), und mindestens eine auf der Lederpartikel umfassenden Schicht (3) angeordnete Verschleißschicht (4). Des Weiteren betrifft die vorliegende Erfindung jeweils Verfahren zur Herstellung dieser Holzwerkstoffplatten.
摘要:
The present invention relates to a method for oxidatively converting at least one gaseous alkane, preferably a C1-C4 alkane, especially preferably methane, in at least one fluidized bed membrane reactor, which comprises at least one first inlet line (1), at least one second inlet line (3), which is present at least in some sections within the reactor in the form of a membrane (5) having at least one active membrane surface, and at least one catalyst bed (4). According to the invention, the method comprises the steps of introducing at least one first flow (1a) containing the at least one gaseous alkane into the at least one catalyst bed in the reactor by means of the at least one first inlet line (1), and introducing at least one second flow (2) containing oxygen or a gas containing oxygen into the reactor by means of the at least one second inlet line (3), wherein the second flow is introduced into the at least one catalyst bed (4) of the reactor by means of the at least one active membrane surface. The application further relates to a reactor for performing said method.
摘要:
The present invention relates to a multistep process for obtaining modified inorganic particles having a layered structure, characterized by the steps of a) Providing an aqueous solution or suspension comprising at least one first amino compound in a first vessel T1 and protonating the at least one first amino compound using at least one acid; b) Providing an aqueous homogenous suspension comprising at least one inorganic particle having a layered structure in a second vessel T2; c1) addition of the aqueous solution or suspension of the at least one first protonated amino compound from the first vessel T1 to the aqueous homogenous suspension comprising at least one inorganic particle having a layered structure in the second vessel T2; c2) Addition of at least one second non-protonated amino compound to the suspension obtained in step c1); d) Addition of at least one aldehyde to the homogenous suspension of the at least one inorganic particle being modified by the first protonated amino compound and second non-protonated amino compound in the second vessel T2; and e) removal and work up of the modified inorganic particles. The present invention relates also to modified inorganic particles obtained in this multistep process and their use.
摘要:
Methods and compositions generating and using an interleukin-1 receptor antagonist (IL-lra)-rich solution. Methods for generating and isolating interleukin-1 receptor antagonist include incubating a liquid volume of white blood cells and platelets with polyacrylamide beads to produce interleukin-1 receptor antagonist. The interleukin-1 receptor antagonist is isolated from the polyacrylamide beads to obtain the solution rich in interleukin-1 receptor antagonist. Methods for treating a site of inflammation in a patient include administering to the site of inflammation the solution rich in interleukin-1 receptor antagonist.