ZSM-22 zeolite, hydroisomerization catalyst and method for producing same, and method for producing hydrocarbon
View Patent ↗A method for producing a hydroisomerization catalyst includes a first step of preparing a support precursor by heating a mixture containing an ion-exchanged zeolite and a binder, the ion-exchanged zeolite being prepared by ion-exchanging an organic template-containing zeolite which contains an organic template and has a one-dimensional pore structure including a 10-membered ring in a solution containing ammonium ions and/or protons, at a temperature of 250 to 350° C. under N 2 atmosphere, and a second step of preparing a hydroisomerization catalyst, which is prepared by calcining a catalyst precursor, the catalyst precursor being prepared based on the support precursor containing a platinum salt and/or a palladium salt, at a temperature of 350 to 400° C. in an atmosphere containing molecular oxygen, the hydroisomerization catalyst containing a support which includes a zeolite and carries platinum and/or palladium.
1. A method for dewaxing hydrocarbon oil comprising:
contacting a hydrocarbon oil comprising normal paraffins having 10 or more carbon atoms with a hydroisomerization catalyst in the presence of hydrogen to convert some or all of the normal paraffins into isoparaffins,
wherein the hydroisomerization catalyst is produced by a process comprising:
a first step of preparing a support precursor by heating a mixture containing an ion-exchanged zeolite and a binder, the ion-exchanged zeolite being prepared by ion-exchanging an organic template-containing zeolite which contains an organic template and has a one-dimensional pore structure including a 10-membered ring in a solution containing ammonium ions and/or protons, at a temperature of 250 to 350° C. under N 2 atmosphere, and
a second step of preparing a hydroisomerization catalyst, which is prepared by calcining a catalyst precursor, the catalyst precursor being prepared based on the support precursor containing a platinum salt and/or a palladium salt, at a temperature of 350 to 400° C. in an atmosphere containing molecular oxygen, the hydroisomerization catalyst containing a support which includes a zeolite and carries platinum and/or palladium;
and wherein the organic template contains 1,8-diamino octane.
2. A method for producing hydrocarbons comprising:
contacting a hydrocarbon feedstock comprising normal paraffins having 10 or more carbon atoms with the hydroisomerization catalyst of claim 1 in the presence of hydrogen.
3. A method for producing lubricant base oil comprising:
contacting a hydrocarbon feedstock comprising normal paraffins having 10 or more carbon atoms with the hydroisomerization catalyst of claim 1 in the presence of hydrogen,
under conditions in which the conversion of the normal paraffins, which is defined by the Expression (I), becomes substantially 100% by mass:
Normal
paraffin
conversion
(
%
)
=
[
1
-
(
Total
mass
of
normal
paraffins
equal
to
or
greater
than
Cn
contained
in
contacted
hydrocarbon
feedstock
)
(
Total
mass
of
normal
paraffins
equal
to
or
greater
than
Cn
contained
in
hydrocarbon
feedstock
yet
to
be
contacted
)
]
×
100
(
I
)
where Cn is the lowest number of carbon atoms of normal paraffins having 10 or more carbon atoms contained in the hydrocarbon feedstock yet to be contacted.
4. The method for producing lubricant base oil according to claim 3 further comprising:
hydrofinishing and vacuum-distilling the hydrocarbon feedstock after the hydrocarbon feedstock is contacted with the hydroisomerization catalyst.
5. The method for producing lubricant base oil according to claim 3 ,
wherein the hydrocarbon feedstock is at least one selected from: atmospheric residues; vacuum residues; a vacuum gas oil; a slack wax; and a Fischer Tropsch synthetic wax.