MOF-based product and method for producing MOF-based products
A product based on a metal-organic framework (MOF) and the method for producing same, the product containing particles bound by a binder, the binder including boehmite, the particles being essentially MOF particles and, optionally, particles of a ceramic material other than boehmite.
1 . A MOF-based product, said MOF-based product comprising particles bound by a binder, said binder comprising boehmite, said particles being essentially MOF particles and optionally particles of a ceramic material other than boehmite and said MOF-based product comprising particles bound by a binder, said binder consisting essentially of boehmite and a hydrated alumina.
2 . The MOF-based product according to claim 1 , wherein the amount of boehmite in said product is less than 11% by weight.
3 . The MOF-based product according to claim 2 , wherein the amount of boehmite in said product is between 1 and 10% by weight.
4 . The MOF-based product according to claim 2 , wherein the amount of boehmite in said product is between 3 and 10% by weight.
5 . The MOF-based product according to claim 1 , wherein more than 90% by mass of the particles bound by said binder are MOF particles.
6 . The MOF-based product according to claim 1 , wherein said particles made of a ceramic material other than boehmite are particles of a material selected from the group consisting of ZrO 2 , Al 2 O 3 , SiO 2 , TiO 2 , ZnO, SiC, and C.
7 . The MOF-based product according to claim 1 , wherein the MOF particles are particles of an MOF or a mixture of at least two populations of MOF particles selected from the group consisting of MOF-0, MOF-2, MOF-3, MOF-4, MOF-5, MOF-6, MOF-7, MOF-8 MOF-9, MOF-11, MOF-12, MOF-20, MOF-25, MOF-26, MOF-31, MOF-32, MOF-33, MOF-34, MOF-36, MOF-37, MOF-38, MOF-39, MOF-47, MOF-49, MOF-69a, MOF-69b, MOF-74, MOF-101, MOF-102, MOF-107, MOF-108, MOF-110, MOF-177, MOF-j, MOF-n, IRMOF-1, IRMOF-2, IRMOF-3, IRMOF-4, IRMOF-5, IRMOF-6, IRMOF-7, IRMOF-8, IRMOF-9, IRMOF-10, IRMOF-11, IRMOF-12, IRMOF-13, IRMOF-14, IRMOF-15, IRMOF-16, IRMOF-17, IRMOF-18, IRMOF-19, IRMOF-20, AS16, AS27-2, AS32, AS54-3, AS61-4, AS68-7, BPR43G2, BPR48A2, BPR49B1, BPR68D10, BPR69B1, BPR73E4, BPR76D5, BPR80D5, BPR92A2, BPR95C5, UiO-66, UiO-67, UiO-68, NO13, NO29, NO305, NO306A, NO330, NO332, NO333, NO335, NO336, HKUST-1, MIL-100, and MIL101.
8 . The MOF-based product according to claim 1 , wherein a largest dimension of said product is less than 100 mm and/or a smallest dimension of said product in a plane perpendicular to a direction of its largest dimension is greater than 100 micrometers.
9 . A method for producing a MOF-based product according to claim 1 , comprising:
a) mixing raw materials to form a feedstock, said feedstock containing a MOF powder or a mixture of at least two MOF powders, a boehmite powder, and optionally a powder of another ceramic material, an amount of boehmite being such that a mass ratio of the amount of boehmite to the total amount i) of boehmite, ii) of the one or more MOF powder(s) and iii) optionally of the powder of said other ceramic material is greater than or equal to 1% and less than or equal to 11%,
the amount of powder of said other ceramic material being such that the mass ratio of the amount of said powder to the total amount of the one or more MOF powder(s) and optionally of the powder of said other ceramic material is less than or equal to 10%,
b) shaping said feedstock, so as to obtain a preform,
c) optionally drying said preform, and
d) heat-treating said preform at a temperature lower than the degradation temperature of the MOF or than the lowest degradation temperature of the MOFs.
10 . The method for obtaining a MOF-based product according to claim 9 , wherein the mass ratio of the amount of boehmite to the total amount i) of boehmite, ii) of the one or more MOF powder(s) and iii) of the optional powder of said other ceramic material is greater than or equal to 3% and less than 11%.
11 . The method for obtaining a MOF-based product according to claim 9 , wherein the feedstock does not contain ceramic material powder other than boehmite.
12 . The method for obtaining a MOF-based product according to claim 9 , wherein the boehmite of the feedstock is peptized.
13 . The method for obtaining a MOF-based product according to claim 9 , wherein the feedstock consists of MOF powder(s), boehmite, the optional powder of said ceramic material other than boehmite, solvent, acid, organic binder, plasticizer, lubricant, and pore-forming particles.
14 . The method for obtaining a MOF-based product according to claim 9 , comprising a drying step c).
15 . The method for obtaining a MOF-based product according to claim 9 , wherein the maximum temperature reached during the heat treatment step d) is greater than the MOF degradation temperature minus 170° C. or the lowest degradation temperature of the MOFs minus 170° C. and less than the MOF degradation temperature minus 5° C. or the lowest degradation temperature of the MOFs minus 5° C.
16 . A device comprising a MOF-based product according to claim 1 , said device being chosen from a liquid filtration device, gas filtration device, liquid storage device, gas storage device, or catalyst support.
17 . A MOF-based product, said MOF-based product comprising particles bound by a binder, said binder comprising boehmite, said particles being essentially MOF particles and optionally particles of a ceramic material other than boehmite and said MOF-based product consisting essentially of particles bound by a binder, said binder consisting essentially of boehmite and a hydrated alumina.