Trace amounts of carbon monoxide and optionally hydrogen are removed from gaseous feed streams by passing the feed stream through a carbon monoxide adsorbent (33) prior to passing it through a supported metal catalyst (34). The invention saves significant capital and operational costs over existing processes.

A method of growing a crystal on a substrate disposed in a reactor, that provides a reactor chamber in which the substrate is disposed, includes flowing reactive gases inside the reactor chamber toward the substrate, the reactive gases comprising components that are able to bond to each other to form the crystal, and flowing buffer gas in the reactor chamber between the reactive gases and a wall of the reactor, where the flowing buffer gas inhibits at least one of a first material at least one o...

Recrystallization of sodium chloride in the form of high-purity cubic crystals from a sodium chloride source containing calcium sulphate impurity by multieffect evaporation preceded by treatment of the hot sodium chloride saturated brine by flocculents and settling, to cause the undissolved calcium sulphate particles and any other suspended solids to agglomerate and settle out of the brine prior to recrystallization of the sodium chloride. The conventional requirement for filtering the hot brine...

Hydrogen of a purity of at least 90% is obtained from a cryogenic unit. The impure hydrogen is pretreated for removal or conversion of the impurities in a bed of fluidized iron oxides.

Provided is an ionic liquid, represented by the formula K.sup.+A.sup.-, having a very low content of impurities, especially a low content of halogen ions and/or a low content of alkali metal, wherein K.sup.+is a quaternary ammonium ion, for example an imidazolium ion. Also provided is a quaternarization process for making the ionic liquid in reacted with an acid ester such as a sulfate or phosphate.

An apparatus and method for electrochemically modifying the retention of a species on a chromatography material is disclosed. The apparatus comprises a housing having an effluent flow channel adapted to permit fluid flow therethrough. The effluent flow channel comprises chromatography material. The apparatus further comprises first and second electrodes positioned such that at least a portion of the chromatography material is disposed between the first and second electrodes, and fluid flow throu...

A method of growing a crystal on a substrate disposed in a reactor, that provides a reactor chamber in which the substrate is disposed, includes flowing reactive gases inside the reactor chamber toward the substrate, the reactive gases comprising components that are able to bond to each other to form the crystal, and flowing buffer gas in the reactor chamber between the reactive gases and a wall of the reactor, where the flowing buffer gas inhibits at least one of a first material at least one o...

The present invention creates a color transform for transforming color image data from a device-independent color space to a device-dependent color space of a color device. A forward model is accessed which transforms color image data from the device-dependent color space to the device-independent color space. The forward model is iteratively inverted to obtain a plurality of distinct device-dependent data point value sets, wherein the device-dependent data point value sets are colorimetrically ...

The method of producing high purity thallium-201 for use as a myocardial scanning agent comprising the steps of irradiating a thallium target with protons to give the reaction .sup.203 Tl(p,3n) .sup.201.sub.Pb, separating in ion exchange columns the lead from the thallium isotopes, permitting the lead to decay, and then purifying the thallium solution and converting the thallium present to thallous form in which it can be used.

A nickel powder metallurgy product containing very small amounts of carbon, oxygen, magnesium, and aluminum is characterized by very high strength and fine grain.