This invention relates to a process, comprising reacting ethylene and oxygen or a source of oxygen in the presence of a catalyst in a reactor to form a product comprising ethylene oxide, wherein the catalyst contains silver or silver compound and a support and the catalyst is in the form of particul
This invention relates to a process, comprising reacting ethylene and oxygen or a source of oxygen in the presence of a catalyst in a reactor to form a product comprising ethylene oxide, wherein the catalyst contains silver or silver compound and a support and the catalyst is in the form of particulate solids having a mean particle diameter from 1 to 1000 μm and wherein the molar ratio of oxygen to ethylene is from 1:4 to 10:1.
대표청구항▼
1. A process, comprising: reacting ethylene and oxygen or a source of oxygen in the presence of a catalyst in a microchannel reactor to form a product comprising ethylene oxide,wherein the catalyst contains silver or silver compound and a support and the catalyst is in the form of particulate solids
1. A process, comprising: reacting ethylene and oxygen or a source of oxygen in the presence of a catalyst in a microchannel reactor to form a product comprising ethylene oxide,wherein the catalyst contains silver or silver compound and a support and the catalyst is in the form of particulate solids having a mean particle diameter from 1 to 1000 μm andwherein the molar ratio of oxygen to ethylene is from 1:2 to 1:1, wherein the gas hourly space velocity is from about 4 000 to 100 000 h−1 andwherein ethylene oxide is produced at a rate of at least 250 kilograms of ethylene oxide per cubic meter of catalyst per hour and having a selectivity to ethylene oxide of at least 82%, maintaining an average temperature in the reaction zone below 250° C. andwherein the process takes place at a pressure from atmospheric to 100 atmospheres andwherein the microchannels have at least one internal dimension of height or width of up to 10 mm, andwherein the contact time of the process fluids with the catalyst within the reactor is in the range from 50 to 900 milliseconds (ms). 2. The process as claimed in claim 1, wherein the production run continues until at least 4 kilotons of ethylene oxide are produced per cubic meter of catalyst. 3. The process of claim 1, wherein the selectivity to ethylene oxide is in the range from about 85 to about 95%. 4. The process of claim 1, wherein the ethylene oxide is produced at a rate in the range from about 500 to about 5000 kilograms per cubic meter of catalyst per hour. 5. The process of claim 1, wherein the mean particle diameter of the catalyst is from 75 to 300 μm. 6. The process of claim 1, wherein the catalyst comprises one or more of Mo, Re, W, V, Nb, Sb, Sn, Pt, Pd, Cs, Zr, Cr, Mg, Mn, Cu, Ni, Co, Ce, Ti, Hf, Tl, Th, Ga, Ge, Zn, Rh, Ru, Fe, an oxide of one or more thereof, alkali or alkaline earth metal, sulfur or an oxide thereof, or a mixture of two or more thereof. 7. The process as claimed in claim 6, wherein the catalyst comprises silver, one or more alkali metal promoters, and optionally one or more co-promoters, wherein said co-promoters are sulfur, molybdenum, tungsten, chromium, rhenium or a mixture of two or more thereof. 8. The process of claim 1, wherein the catalyst is free of rhenium. 9. The process of claim 1, wherein the catalyst's active composition comprises silver and a promoting amount of cesium.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (22)
Chou Pen-Yuan (Charleston WV) Bhasin Madan M. (Charleston WV) Soo Hwaili (Charleston WV) Thorsteinson Erlind M. (Charleston WV), Alkylene oxide catalysts having enhanced activity and/or stability.
Hunter James B. (Newton Square PA) McGuire George (West Chester PA) D\Alessandro A. F. (Havertown PA) Lawlor Larry L. (Glenmoore PA), Catalyst comprising a metal substrate.
Acres Gary James Keith (London EN) Cooper Barry John (London EN) Diwell Alan Francis (London EN) Evans William David James (London EN), Catalyst for purifying automotive exhaust gases.
Dalla Betta Ralph A. (Mountain View CA) Tsurumi Kazunori (Fujisawa CA JPX) Shoji Toru (Sunnyvale CA), Graded palladium-containing partial combustion catalyst and a process for using it.
Brophy,John H.; Pesa,Frederick A.; Tonkovich,Anna Lee; McDaniel,Jeffrey S.; Jarosch,Kai Tod Paul, Process for converting a hydrocarbon to an oxygenate or a nitrile.
Cremer, Ulrich; Wilmer, Hagen; Raichle, Andreas; Petersen, Hermann; Borchert, Holger; Strahberger, Horst; Mueller-Engel, Klaus Joachim, Process for introducing a portion withdrawn from at least one production charge of annular coated catalysts K into a reaction tube of a tube bundle reactor.
Shima Masahide,JPX ; Takada Hitoshi,JPX, Silver catalyst for production of ethylene oxide, method for production thereof, and method for production of ethylene oxide.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.