Process for making a lube basestock
AssigneeExxonMobile Research and Engineering Company
InventorsWilliam Murphy, Gary McVicker, Sylvain Hantzer, Ian Cody, Stuart Soled, Sandra Linek, Joseph Baumgartner
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Abstract
A method for hydroisomerizing a waxy feed to favor one of VI or yield is described. The method uses a unitized pellet powder catalyst comprising a metal hydrogeneration component, a first catalytic component selected from 8, 10 and 12 ring moleular sieves and mixtures thereof, and a second amorphous isomerization component which is an amorphous inorganic oxide. Importantly, the ratio of feed and second components are present in a predetermined ratio to provide a preselected acidity favoring one of VI or yield resulting from the hydroisomerization.
Claims17
A method for hydroisomerizing a waxy feed to produce improved yield of a lube basestock which comprises:
- (a) contacting the waxy feed under hydroisomerization conditions with a catalyst comprising a unitized mixed powdered pellet catalyst, said catalyst comprising:
- (i) a first dewaxing component selected from 8, 10 and 12 ring molecular sieves and mixtures thereof having a metal hydrogenation component dispersed thereon;
- (ii) a second isomerization component which is an amorphous inorganic oxide said second component having a metal hydrogenation component dispersed thereon;
- and
- (iii) wherein the first and second components are present in a ratio such that when evaluated in the conversion of methyl cyclohexane at 320° C. to 1,1-dimethylcyclopentane, 1,2-dimethylcyclopentane, 1,3-dimethylcyclopentane and ethylcyclopentane, the catalyst will provide a trans-1,2-/trans-1,3-dimethylcyclopentane ratio in the range of less than about 1 and a selectivity to ethylcyclopentane, at 10% conversion, of at least about 50%.
A method for hydroisomerizing a waxy feed to produce improved yield of a lube basestock which comprises:
- (a) contacting the waxy feed under hydroisomerization conditions with a catalyst comprising a unitized mixed powdered pellet catalyst, said catalyst comprising:
- (i) a first dewaxing component selected from 8, 10 and 12 ring molecular sieves and mixtures thereof having a metal hydrogenation component dispersed thereon;
- (ii) a second isomerization component which is an amorphous inorganic oxide said second component having a metal hydrogenation component dispersed thereon;
- and
- (iii) wherein said first and second components are present in a ratio such that when evaluated in the conversion of methyl cyclohexane at 320° C. to 1,1-dimethylcyclopentane, 1,2-dimethylcyclopentane, 1,3-dimethylcyclopentane and ethylcyclopentane, the catalyst will provide a trans-1,2-/trans-1,3-dimethylcyclopentane ratio in the range of at least 1 and a selectivity to ethylcyclopentane, at 10% conversion, of at least about 50%.
A method for hydroisomerizing a waxy feed to produce improved yield of a lube basestock which comprises:
- (a) contacting the waxy feed under hydroisomerization conditions with a catalyst comprising a unitized mixed powdered pellet catalyst, said catalyst comprising:
- (i) at least one first component selected from 8, 10 and 12 ring molecular sieves, and mixtures thereof, having a metal hydrogenation component dispersed thereon;
- (ii) at least one second component selected from 8, 10 and 12 ring molecular sieves, and mixtures thereof, having a metal hydrogenation component dispersed thereon;
- and
- (iii) wherein said first and second components are present in a ratio such that when evaluated in the conversion of methyl cyclohexane at 320° C. to 1,1-dimethylcyclopentane, 1,2-dimethylcyclopentane, 1,3-dimethylcyclopentane and ethylcyclopentane, the catalyst will provide a trans-1,2-/trans-1,3-dimethylcyclopentane ratio in the range of less than about 1 and a selectivity to ethylcyclopentane, at 10% conversion, of at least about 50%.
Dependencies are inferred from the claim text.