Commensurate adsorption of hydrocarbons and alcohols in microporous metal organic frameworks.

This invention relates to a new synthetic composition of ultra-large pore crystalline material and use thereof as sorbent and in catalytic conversion of organic and inorganic compounds. The new crystalline material exhibits unusually large sorption capacity demonstrated by its benzene adsorption capacity of greater than about 15 grams benzene/100 grams at 50 torr and 25° C., a hexagonal electron diffraction pattern that can be indexed with a d 100 value greater than about 18 Angstrom Units and a hexagonal arrangement of uniformly sized pores with a maximum perpendicular cross section of at least about 13 Angstrom units.

Synthetic mesoporous crystaline material

The present invention relates to novel soil release agents, which are particular sulfonated linear terephthalate ester oligomers (S.T.E. oligomers). The S.T.E. oligomers are especially suitable for formulation into laundry products such as laundry detergents or fabric conditioners. Thus formulated, they provide effective soil release treatments for fabrics laundered in the home. The S.T.E. oligomers can be made by radical-initiated sulfonation of an allyl end-capped oligomeric ester precursor, and in the preferred embodiments, comprise a high proportion of disulfonate or sulfinate-sulfonate end-capping groups.

Soil release agents having allylderived sulfonated end caps

Petroleum wax feeds having a low oil content are converted to high viscosity index lubricants by a two-step hydrocracking-hydroisomerization process in which the wax feed is initially subjected to hydrocracking under mild conditions with a conversion to lube range products of between generally 30 and 40 wt.% of the feed. The hydrocracking is carried out at a hydrogen pressure of at least 800 psig (5617 PkPaa) using an amorphous catalyst which preferentially removes the aromatic components present in the initial feed. The hydrocracked effluent is then subjected to hydroisomerization in a second step using a low acidity zeolite beta catalyst. The second stage may be operated at high pressure by cascading the first stage product into the second stage or at a lower pressure, typically from 200 to 1000 psig (1480 to 6996 PkPaa). The second stage catalyst is preferably a noble metal containing zeolite beta catalyst. The second stage is carried out at relatively low temperature, typically from 600° to 650 °F (316 to 343 °C). A final dewaxing step to target pour point may be used.

Production of high viscosity index lubricants

The sorption isotherms and self-diffusivities of CO2 and N2 in silicalite have been calculated via grand canonical Monte Carlo and equilibrium molecular dynamics simulations over a wide range of occupancies, using various force fields proposed in the literature. Predictions for the sorption thermodynamics are in very favorable agreement with the experiment, especially when detailed point-charge models are used to represent the interaction of the quadrupole moments of the sorbate molecules with the lattice field and with each other. They indicate that the zeolite cannot be in its para (P212121) form under the conditions of the measurements. Permeabilities corresponding to a perfectly crystalline membrane have been estimated for CO2 and N2, as well as for methane, examined in past simulation work, from the predicted sorption isotherms and low-occupancy self-diffusivities by invoking the Darken equation. The ratios of pure component permeabilities obtained in this way agree very well with actual macroscopic ...

Prediction of Permeation Properties of CO2 and N2 through Silicalite via Molecular Simulations

This invention relates to a composition of matter comprising an inorganic, porous crystalline phase material exhibiting, after calcination, an X-ray diffraction pattern with at least one peak at a d-spacing greater than 1.8 nm and having a benzene adsorption capacity of greater than 15 grams benzene per 100 grams of said material at 6.7 kPa (50 torr) and 25 °C. Preferably, the crystalline phase material has a hexagonal arrangement of uniformly-sized pores at least 1.3 nm in diameter and exhibiting, after calcination, a hexagonal electron diffraction pattern that can be indexed with a d100 value greater than 1.8 nm.

Synthetic porous crystalline material its synthesis and use

Equilibrium sorption sites for /rho/-xylene in the channels of ZSM-5 were estimated based on calculated van der Waals interactions between the hydrocarbon and zeolite and between the hydrocarbon molecules themselves. These calculations indicate that the most energetically favored sorption sites are the channel intersections for /rho/-xylene loadings less than or equal to 4 molecules per unit cell of zeolite. At /rho/-xylene loadings > 4 molecules per unit cell, molecules begin to preferentially fill the sinusoidal channels in addition to channel intersections. Variable-temperature MAS carbon NMR confirms this higher loading packing arrangement at temperature less than or equal to 20/degrees/C.

A theoretical and NMR study of p-xylene sorption into ZSM-5

There is provided a method for synthesizing a new synthetic composition of ultra-large pore crystalline material which can be used as a sorbent or catalyst component for conversion of organic and inorganic compounds. The crystalline material product of this method exhibits unusually large sorption capacity demonstrated by its benzene adsorption capacity of greater than about 15 grams benzene/100 grams at 50 torr and 25° C. This material may have a hexagonal electron diffraction pattern that can be indexed with a d100 value greater than about 18 Angstrom Units and a hexagonal arrangement of uniformly sized pores with a maximum perpendicular cross section of at least about 13 Angstrom units. The reaction mixture for preparing this material is prepared by forming a solution containing a source of an oxide, followed by adding a gelling reagent to this solution to form a gel.

Synthesis of mesoporous oxide

Methods for separation of substances are provided. The methods include contacting a mixture of at least two components in flowable conditions with mesoporous, crystalline materials termed M41S which also include MCM-41 materials. The mesoporous crystalline materials may be used in separations as is or functionalized.

Method for separation of substances

This invention relates to use of a new and improved form of crystalline material identified as having the structure of SUZ-9 as a sorbent or a catalyst for organic compound, e.g., hydrocarbon compound, conversion.

Kirk D. Schmitt

Papers

Synthetic porous crystalline material its synthesis and use

A theoretical and NMR study of p-xylene sorption into ZSM-5

Synthesis of mesoporous oxide

Method for separation of substances

Use of crystalline SUZ-9