Japan CDS-1 successfully developed a new type of molecular sieve

Recently, Xiao Bian understand a message from the Japanese National Institute of Advanced Industrial Science and Technology (AIST) synthesis of a novel molecular sieve ethanol dehydration CDS-1 has been successfully developed.
 It was prepared by a layered silicate, has a unique structure - by 13x molecular sieves stacking blocks.  According to the institute, said the film chemistry lab, CDS-1 between its silicate layers has many pores.  Research center will work processing CDS-1 into the film, mainly used for the separation agent catalyst.  Typically, the use of a structure-directing agent (Structure-directing agent) complex can be formed by hydrothermal synthesis of nanosized pore size.  These pores may be at about 420 ℃, using condensation polymerization method easily and economically be bonded together to form a silicate layer.

 This made one molecular structure but retain the layered silicate framework is without precedent.  Molecular sieves containing silicon, aluminum and oxygen atoms.  When the silica-alumina composite containing a high proportion of silicon, called a high-silica zeolite.  This kind of molecular sieve is hydrophobic and high temperature.  AIST has a molecular sieve such intellectual property rights, the Department of silicon and oxygen by a silicate system.  It is resistant to high temperature above 800 ℃ and chemical resistance.  When immersed in a solution of an acid or a base, and still retains its original structure.

Molecular sieve Introduction

Molecular sieve is a cubic lattice aluminosilicate compound having. Molecular sieve has a uniform porous structure, the diameter of its pores of uniform size, these cavities can adsorb molecules smaller diameter than the bore to the interior, and the polarity molecular sieve separation of the molecules and the preferential adsorption of the unsaturated molecules having a capacity, which can very different degree, a different degree of saturation, and the boiling point of different molecular size to separate different molecules, which has the effect of "screening" of molecules, so called molecular sieves 13x molecular sieves. Since the molecular sieves have a high adsorption capacity, high thermal stability, etc. The other adsorbents that are not so widely used to obtain the molecular sieve.

oxygen therapy and oxygen care has an irreplaceable role and broad prospects for development

Appropriate oxygen, there microcirculation status, reducing the load of the respiratory system in order to maintain a certain oxygen partial pressure of alveolar gas necessary to reduce the amount 3a zeolite molecular sieves  of load in order to maintain cardiac arterial partial pressure of oxygen required for a certain effect. Thus in clinical medicine, preventive medicine, first aid medicine, geriatrics, activated zeolite powder rehabilitation and health care and medicine,zeolite desiccant oxygen therapy and oxygen care has an irreplaceable role and broad prospects for development.

the oxygen demand for small-scale, but also the use of PSA oxygen, including PSA and VPSA oxygen molecular sieve adsorbent oxygen process, working principle is the use of highly efficient nitrogen-oxygen separation adsorbent nitrogen adsorption certain time desorption regeneration, cyclical operation, the purpose of the two towers or more adsorption towers in parallel, to achieve continuous production of oxygen.