Molecular sieve, its preparation and application thereof

A method for the preparation of a molecular sieve, comprising:

• contacting a first oxide source, a second oxide source, an organic template, and water under crystallization conditions to produce a molecular sieve,
• wherein the first oxide is at least one selected from silica, germanium dioxide, tin dioxide, titania, and zirconium dioxide,
• the second oxide is at least one selected from alumina, a boron oxide, an iron oxide, a gallium oxide, a rare earth oxide, an indium oxide, and a vanadium oxide, and
• wherein the organic template comprises a compound represented by the following formula (I),
• wherein the groups R1 and R2 are different from each other, each independently selected from C3-12 linear alkylene groups, C3-12 branched alkylene groups, C3-12 linear oxaalkylene groups, and C3-12 branched oxaalkylene groups;
• the plural groups R are identical or different from each other, each independently selected from C1-4 linear alkyl groups and C1-4 branched alkyl groups;
• and
• X is OH.