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.
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