|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||C01G-035/06 C01G-047/02 C01G-047/04 C01G-011/02 C01G-011/00 B01J-023/00|
|미국특허분류(USC)||208/137; 208/112; 208/114; 208/123; 208/124; 208/136; 208/138; 208/251.R; 208/254.R; 502/211; 502/213; 502/314; 502/315; 502/316; 502/320; 502/322; 502/323; 502/327; 502/332; 502/333; 502/334; 502/33|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 9 인용 특허 : 64|
Alumina having a pore structure characterized by the absence of macropores, no more than 5% of the total pore volume in pores greater than 350 Å, a high pore volume (greater than 0.8 cc/g measured by mercury intrusion) and a bi-modal pore volume distribution character, where the two modes are separated by 10 to 200 Å, and the primary pore mode is larger than the median pore diameter (MPD), calculated either by volume or by surface area, the MPD by volume being itself larger than the MPD by surface area. Also provided are catalysts made from a...
We claim: 1. A catalyst support comprising an alumina extrudate characterized by having: no more than 5% of its total pore volume in pores having a diameter greater than 350 Å; a total pore volume greater than 0.8 cc/g measured by mercury intrusion; and a bi-modal pore volume distribution having a primary and a secondary mode, wherein the primary mode exhibits a higher maximum than the secondary mode; the primary and secondary modes are separated by at least about 10 Å and by as much as about 200 Å; the primary pore mode occurs at a po...