Figure 5 shows these isotherms for the molecular sieve
and silica gel particles and coatings.
have an equilibrium capacity of up to 20% by weight water.
By 1954, largely through the championship of Bob Milton, Linde had announced it was entering the business of manufacturing and selling molecular sieve
zeolites as a new class of industrial adsorbents, and in 1959 as hydrocarbon conversion catalysts--a remarkable example of discovery to commercialization of a new business venture in just five years.
To improve on nature's molecular sieves
, many researchers are developing synthetic varieties whose properties they can tailor (SN: 6/23/01, p.
Indeed, a molecular sieve
enclosed in a polymer cage with void space between the two phases appears to be the picture (shown in a schematic representation in Fig.
A previous recipient of The Design Council's Millenium Award, the company's range of Maxigas nitrogen gas generators uses a carbon molecular sieve
to separate the oxygen from compressed air to provide high purity nitrogen alone.
A fractionation step and molecular sieve
are used to get the solvent and monomer feed dry enough for the polymerization reaction.
The VFD minimizes the air flow to a point that water is desorbed from the molecular sieve
but only minimal heat leaves the wheel during the regeneration process.
Dust-free silica gel, activated carbon, molecular sieve
or a combination can be used as desiccant.
Among the issues to be discussed in the conference, mention can be made of: nanotechnology-based zeolites (nanozeolites), morphology and structure changes, environmental applications and requirements, catalyst, adsorption and molecular sieve
and ion exchange.
Italian dryer manufacturer New Omap has added a wheel dryer to its range--with the molecular sieve
permanently bonded into a rotor with a honeycomb type matrix.
i], for (a) molecular sieve
and (b) silica gel coatings on similar 100 mm thick wheels using data from Wang (2005).