Abstract:
The invention comprises a structure having at least two separate air chambers (7) enclosed by flexible, flat material (8) and having flexible bars (9) in the interior thereof for stabilizing an external shape of the air chambers (7). The structure is characterized in that the air chambers (7) form a wall structure (4) in the inflated state. By means of such a wall structure (4)—preferably in conjunction with a corresponding ceiling structure (16)—lightweight berths (1), particularly for aircraft crew, flight passengers, or transported injured persons, can be set up quickly and simply.
Abstract:
A catalytic composite comprising a combination of catalytically effective amounts of a platinum component, optionally a second metal component such as tin or rhenium, and a halogen component with a porous carrier support material is disclosed. The platinum, second metal (if present) and halogen components are present in the catalytic composite in amounts, calculated on an elemental basis, of about 0.2 to about 0.4 wt. percent platinum metal, about 0.2 to about 0.5 wt. percent the second metal, and 0.5 to about 1.5 wt. percent halogen. Moreover, the metallic components are substantially uniformly distributed throughout the porous carrier support material. The support material is spherical gamma alumina having a characteristic pore structure including "superpores" (200-10,000 nm or greater) interconnected with "mesopores" (5-20 nm), wherein 80% or more of the pore volume (N.sub.2) resides in pores of less than 150 .ANG.. The principal use of the catalytic composite of the present invention is for hydrocarbon conversion, particularly in the reforming of a gasoline fraction.
Abstract:
This invention relates to a novel synthetic crystalline molecular sieve composition which may contain framework +3 valence element, e.g. aluminum, +4 valence element, e.g. silicon, and +5 valence element, e.g. phosphorous, and to use thereof in catalytic conversion of organic compounds. The crystalline composition of this invention exhibits ion-exchange properties and can easily be converted to catalytically active material.
Abstract:
A method is disclosed which provides improved control over the noble-metal exchange of zeolite catalyst by using bulky organic bases to control pH during the metal loading step.
Abstract:
There is provided a process for using poly-nuclear oxometalates in the synthesis of crystalline oxide materials. In addition to a poly-nuclear oxometalate, the reaction mixture includes an additional source of an oxide and two distinct liquid phases, one phase being an aqueous phase and the other phase being an organic phase including a water immiscible organic solvent for either the poly-nuclear oxometalate or the additional oxide source.
Abstract:
An improved method of synthesis for a composition comprising crystalline silicophosphoaluminate (MCM-2) is provided. The composition has ion-exchange properties and is readily convertible to catalytically active material. The synthesis method requires two liquid phases comprising a suitable organic or inorganic directing agent and specific reactants, including a specific aluminum phosphate of the ALPO-5 structure.
Abstract:
A new crystalline silicophosphoaluminate molecular sieve designated MCM-10 and having a particular crystal structure is provided. This crystalline material has ion-exchange properties and is readily convertible to catalytically active material.
Abstract:
A process for converting feedstock comprising hydrocarbon compounds to product comprising hydrocarbon compounds of lower molecular weight than said feedstock hydrocarbon compounds which comprises contacting said feedstock at conditions for said conversion with catalyst comprising crystals having a framework topology after heating at 110.degree. C. or higher giving an X-ray diffraction pattern with interplanar d-spacings at 16.4.+-.0.2 Angstroms, 8.2.+-.0.1 Angstroms, 6.21.+-.0.05 Angstroms, 6.17.+-.0.05 Angstroms, 5.48.+-.0.05 Angstroms and 4.74.+-.0.05 Angstroms, and without a significant interplanar d-spacing at 13.6-13.3 Angstroms.
Abstract:
Disclosed is a vanadium trap for use in FCC which comprises a major amount of calcined kaolin clay, free magnesium oxide and an in situ formed magnesium silicate cement binder. Also disclosed are procedures for the preparation of the trap by forming a slurry in water of hydrous kaolin clay, magnesium oxide or magnesium hydroxide and sodium silicate, aging the slurry to form magnesium silicate in situ, optionally adding additional kaolin, colloidal silica or both, spray drying, and calcining the resulting spray dried microspheres without forming appreciable amounts of crystalline magnesium silicates or crystalline magnesium aluminates.
Abstract:
Silicophosphoaluminates are crystallized from a two-phase reaction mixture comprising sources of silicon oxide, aluminum oxide and phosphorus oxide and a suitable directing agent. The silicophosphoaluminates produced have ion exchange properties and are readily convertible to catalytically active material.