Chapter 5 Correlation Between Catalyst Formulation and Catalytic Properties

Scherzer, Julius

doi:10.1016/s0167-2991(08)63828-8

Cited by 45 publications

(28 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…23,36 While the catalyst at 5% REO may have the highest gasoline selectivity, it does not give the highest gasoline yield at constant 3.89 wt % coke, owing to its higher coke selectivity (lower conversion at 3.89 wt % coke). Thus, the loss of conversion at constant coke overwhelms the gasoline selectivity effect.…”

Section: Emulation Of Refinery Rare Earth and Catalyst Replacement Ratementioning

confidence: 99%

Continuous Age Distribution Method for Catalytic Cracking. 1. Proof of Principle

Stockwell

2015

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

A novel steam-deactivation method is described and demonstrated that is able to produce in the laboratory a mixture of cracking catalyst having the same distribution of zeolite surface area as found in the refinery catalytic cracking unit. Both physical and catalytic properties can be closely matched to the refinery catalyst. Based on fundamental kinetic and reactor models, the method has the potential to be quantitatively predictive of refinery results. Deviations from ideal first order tetrahedral Si decay however prevent a priori prediction of refinery performance at this time. We observed slight deviations within the age distribution, but more significant deviations in overall zeolite crystallinity retention were found as a function of refinery fresh catalyst makeup rate, rendering the method semiquantitative at present. The results constitute proof of principle, however, for the method, and further progress on the found nonidealities is anticipated.

show abstract

Section: Emulation Of Refinery Rare Earth and Catalyst Replacement Ratementioning

confidence: 99%

Continuous Age Distribution Method for Catalytic Cracking. 1. Proof of Principle

Stockwell

2015

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…Although the bottoms yield is higher than for the microporous reference catalysts, this will not be a significant drawback in practice because this fraction can be recycled to the riser. By comparison with yield-conversion data in fluid catalytic cracking [59,60], the higher diesel and lower gasoline yield can be reasonably linked to the improved diffusion due to presence of mesopores that limits secondary cracking reactions of LCO and bottoms [32].…”

Section: Catalytic Activity Measurementsmentioning

confidence: 99%

Texture, acidity and fluid catalytic cracking performance of hierarchical faujasite zeolite prepared by an amphiphilic organosilane

Tempelman

Zhu

Gudun

et al. 2015

Fuel Processing Technology

View full text Add to dashboard Cite

“…Such observations are quite expected since with these solid acids the overcracking of olefinic intermediates can be minimized. In the field of conventional petroleum feedstocks hydrocracking, it is also well known that amorphous silica-alumina based catalysts are less active than zeolite based catalysts but are more suited to maximize the middle distillates production [61]. Interestingly, it was recently claimed that the addition of very small amounts of USY zeolite to amorphous silica-alumina could strongly improve the activity of the catalyst for waxes hydrocracking without significant middle distillates selectivity loss [62].…”

Section: Acidic Functionmentioning

confidence: 99%

Fischer-Tropsch Waxes UpgradingviaHydrocracking and Selective Hydroisomerization

Bouchy

Hastoy

Guillon

et al. 2009

Oil & Gas Science and Technology - Rev. IFP

232

181

View full text Add to dashboard Cite

Résumé -Valorisation des cires de Fischer-Tropsch par hydrocraquage et hydroisomérisation sélective -Ces dernières années, la production de coupes hydrocarbonées à partir de différentes sources par le procédé Fischer-Tropsch a connu un sensible regain d'intérêt. Les coupes hydrocarbonées paraffiniques produites par la réaction de Fischer-Tropsch peuvent être valorisées en base carburants (distillats moyens) ou éventuellement en base huiles de haute qualité. Dans chaque cas, cette étape de valorisation implique l'utilisation de catalyseurs bifonctionnels d'hydrocraquage, pour la production de carburants, ou d'hydroisomérisation sélective, pour la production de base huiles. Les deux types de catalyseurs sont constitués d'une fonction hydro/déshydrogénante et d'une fonction acide; cependant, selon l'application visée, la fonction acide doit respecter des critères sensiblement différents. Une rapide revue des mécanismes et catalyseurs d'hydrocraquage constitue la première partie de cet article. Une attention particulière est portée à la spécificité des charges paraffiniques issues du procédé Fischer-Tropsch comparativement à des charges plus conventionnelles ainsi qu'à l'impact potentiel des composés oxygénés présents dans ces charges sur les performances du catalyseur d'hydrocraquage. La seconde partie de cet article est consacrée aux mécanismes et catalyseurs d'hydroisomérisation sélective. Nous illustrons notamment comment la topologie de la porosité du solide acide constitue un paramètre clé pour gouverner la sélectivité du catalyseur d'hydroisomérisation sélective. Abstract -Fischer-Tropsch Waxes Upgrading via Hydrocracking and Selective Hydroisomerization -In recent years, the production of hydrocarbon cuts from various sources via the Fischer-Tropsch process has lived a renewed interest. Paraffinic cuts produced via the Fischer-Tropsch reaction can be upgraded either to liquid fuels (middle distillates) or to lubricant base oil of high quality. The first kind of upgrading involves the use of a hydrocracking catalyst whereas for the second kind of upgrading

show abstract

Chapter 5 Correlation Between Catalyst Formulation and Catalytic Properties

Cited by 45 publications

References 34 publications

Continuous Age Distribution Method for Catalytic Cracking. 1. Proof of Principle

Continuous Age Distribution Method for Catalytic Cracking. 1. Proof of Principle

Texture, acidity and fluid catalytic cracking performance of hierarchical faujasite zeolite prepared by an amphiphilic organosilane

Fischer-Tropsch Waxes UpgradingviaHydrocracking and Selective Hydroisomerization

Contact Info

Product

Resources

About