A process for producing isopentane which comprises: (a) isomerizing a C.sub.6 -rich hydrocarbon fraction in an isomerization zone to obtain at least isopentane and C.sub.4 alkanes, (b) fractionating the isopentane from the C.sub.4 alkane to obtain an isopentane product, (c) disproportionating at least a portion of the C.sub.4 alkanes in a C.sub.4 disproportionation zone to obtain at least n-pentane and C.sub.3 hydrocarbons, and (d) isomerizing the n-pentane in the isomerization zone. Preferably,...

A process for producing isopentane which comprises: (a) isomerizing a C.sub.6 rich fraction in an isomerization zone to obtain at least isopentane and C.sub.6 alkanes, (b) fractionating the isopentane from the C.sub.6 alkane to obtain an isopentane product, (c) disproportionating at least a portion of the C.sub.6 alkanes in a C.sub.6 disproportionation zone to obtain at least n-pentane and C.sub.7 hydrocarbons, and (d) isomerizing the n-pentane in the isomerization zone. Preferably, the isomeriz...

A conversion system for converting input information indicated by at least two input code units to output information indicated by at least two output code units by the use of a conversion table, in which the two input code units are shifted before application to the conversion table in the direction to upper digits until the most significant digit of a code unit indicative of an absolute value of one of the two input code units assumes one of two possible states of binary information so that th...

This invention relates to use of a new improved form of crystalline silicate identified as zeolite ZSM-11 as a catalyst component for organic compound, e.g. hydrocarbon compound, conversion.

A process for continuously converting starch to paste by heating an aqueous starch slurry with an enzyme to an elevated temperature and holding the mixture at an elevated temperature for a time to gelatinize the starch granules and produce a starch paste of desired viscosity. Then, the starch-enzyme stream is further heated and held at an elevated temperature and for a time sufficient to inactivate the enzyme and after which a starch paste having a desired and substantially stable viscosity is r...

Conversion of alcohol to organic compounds which comprises contacting the alcohol with a heterogeneous catalyst composition comprising at least one member selected from the group consisting of (a) crystalline LnAl.sub.1.67+0.67X (B.sub.4 O.sub.10)O.sub.X, and (b) crystalline LnAl.sub.2.67+0.33Z (B.sub.4 O.sub.11)O.sub.Z where Ln is at least one transition element selected from the group consisting of Group IIIB of the Periodic Table, X is a number ranging from 0 to 1, and Z is a number ranging f...

A conversion adapter including noise filters for eliminating high frequency noise yet having a simple wiring arrangement. The conversion adapter of the invention has two connectors supported on an adapter frame body and spaced opposite to each other and at a different configuration with respect to each other, a small-sized printed circuit board disposed between the two connectors, a plurality of 3-terminal noise filters arrayed in a row on the central portion of the printed board, and board-in c...

A process is provided for the oxidative conversion of methane to higher hydrocarbons wherein a mixture of methane and gaseous oxidant is contacted at reaction conditions with a solid oxidative contact agent which is essentially free of reducible metal oxide, the oxidative conversion taking place in the presence of a chalcogen promoter.

A front conversion lens is disclosed comprising, from front to rear, a first lens unit made of glass material, a second lens unit made of plastic material, and a third lens unit made of glass material.

A hydrocracking process, of especial use in producing high octane gasoline from gas oils and the like, comprises contacting a gas oil or other hydrocarbon feedstock under hydrocracking conditions with a novel catalyst comprising at least one niobium component and a support material comprising a cracking component.