Method for suppressing hydrogenolysis of noble metal/low acidity

Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By ring formation from nonring moiety – e.g. – aromatization,...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

208138, 208139, C07C 252, C10G 3506

Patent

active

048353361

ABSTRACT:
A process for converting a C.sub.6 -C.sub.12 paraffinic hydrocarbon feed to aromatics by contacting the feed with a noble metal/low acidity medium pore size zeolite catalyst in a conversion zone by modifying the noble metal component of the catalyst to its sulfide form by either presulfiding the catalyst or adding at least one of H.sub.2 S, SO.sub.2 or an organic sulfur compound to the feed in an amount effective to suppress hydrogenolysis and increase aromatic selectivity of the catalyst.

REFERENCES:
patent: 3760024 (1973-09-01), Cattanach
patent: 3843741 (1974-10-01), Yan
patent: 4295958 (1981-10-01), Mauldin et al.
patent: 4348271 (1982-09-01), Swan
patent: 4350835 (1982-09-01), Chester et al.
patent: 4579831 (1986-04-01), Field
P. Gallezot et al., "Unusual Catalytic Behavior of very Small Platinum Particles Engaged in Y Zeolites".
T. M. Tri et al., "Sulfur Resistance of Modified Platinum Y Zeolite".
P. G. Menon et al., "Effect of Sulfur Poisoning on the Hydrogenolysis Activity of Pt in Pt/Al.sub.2 O.sub.3 Catalysts".
C. R. Apesteguia et al., "The Role of Catalyst Presulfurization in Some Reactions . . . ".
V. Ponec "Selectivity in Catalysis by Alloys".
F. M. Dautzenberg et al. "Conversion of n-Hexane over Monofunctional . . .".
Rabo et al., "Sulfur-Resistant Isomerization Catalyst: Study of Atomic . . . ".
P. Biloen et al., "The Role of Rhenium and Sulfur in Platinum-Based Hydrocarbon-Conversion Catalysts".
J. R. H. van Schaik et al., "Reactions of Alkanes on Supported Pt--Au Alloys".

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method for suppressing hydrogenolysis of noble metal/low acidity does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for suppressing hydrogenolysis of noble metal/low acidity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for suppressing hydrogenolysis of noble metal/low acidity will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2154262

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.