JP2594879C - - Google Patents
Info
- Publication number
- JP2594879C JP2594879C JP2594879C JP 2594879 C JP2594879 C JP 2594879C JP 2594879 C JP2594879 C JP 2594879C
- Authority
- JP
- Japan
- Prior art keywords
- alumina
- lanthanum
- hours
- specific surface
- surface area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- PNEYBMLMFCGWSK-UHFFFAOYSA-N AI2O3 Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 63
- 239000000843 powder Substances 0.000 claims description 15
- 238000006297 dehydration reaction Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 230000032683 aging Effects 0.000 claims description 8
- FAHBNUUHRFUEAI-UHFFFAOYSA-M Aluminium hydroxide oxide Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 229910001679 gibbsite Inorganic materials 0.000 claims description 5
- 150000002604 lanthanum compounds Chemical class 0.000 claims description 5
- 150000002798 neodymium compounds Chemical class 0.000 claims description 5
- 239000003381 stabilizer Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims description 2
- 230000005070 ripening Effects 0.000 claims 1
- 239000003054 catalyst Substances 0.000 description 17
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 14
- 238000001354 calcination Methods 0.000 description 9
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 9
- 229910052746 lanthanum Inorganic materials 0.000 description 9
- 238000004438 BET method Methods 0.000 description 7
- 229910001941 lanthanum oxide Inorganic materials 0.000 description 7
- 229910001593 boehmite Inorganic materials 0.000 description 6
- 238000010304 firing Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- FYDKNKUEBJQCCN-UHFFFAOYSA-N lanthanum(3+);trinitrate Chemical compound [La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FYDKNKUEBJQCCN-UHFFFAOYSA-N 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 4
- PLDDOISOJJCEMH-UHFFFAOYSA-N neodymium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Nd+3].[Nd+3] PLDDOISOJJCEMH-UHFFFAOYSA-N 0.000 description 4
- 239000007858 starting material Substances 0.000 description 4
- WNROFYMDJYEPJX-UHFFFAOYSA-K Aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 3
- QEFYFXOXNSNQGX-UHFFFAOYSA-N Neodymium Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 3
- 229910052779 Neodymium Inorganic materials 0.000 description 3
- -1 bayerite Chemical compound 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 150000001206 Neodymium Chemical class 0.000 description 2
- 239000012072 active phase Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 150000002603 lanthanum Chemical class 0.000 description 2
- 229910003444 neodymium oxide Inorganic materials 0.000 description 2
- CFYGEIAZMVFFDE-UHFFFAOYSA-N neodymium(3+);trinitrate Chemical compound [Nd+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O CFYGEIAZMVFFDE-UHFFFAOYSA-N 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- ICAKDTKJOYSXGC-UHFFFAOYSA-K Lanthanum(III) chloride Chemical compound Cl[La](Cl)Cl ICAKDTKJOYSXGC-UHFFFAOYSA-K 0.000 description 1
- ATINCSYRHURBSP-UHFFFAOYSA-K Neodymium(III) chloride Chemical compound Cl[Nd](Cl)Cl ATINCSYRHURBSP-UHFFFAOYSA-K 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910001680 bayerite Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000004523 catalytic cracking Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 229910001648 diaspore Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- AEIXRCIKZIZYPM-UHFFFAOYSA-M hydroxy(oxo)iron Chemical compound [O][Fe]O AEIXRCIKZIZYPM-UHFFFAOYSA-M 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxyl anion Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 230000002427 irreversible Effects 0.000 description 1
- JLRJWBUSTKIQQH-UHFFFAOYSA-K lanthanum(3+);triacetate Chemical compound [La+3].CC([O-])=O.CC([O-])=O.CC([O-])=O JLRJWBUSTKIQQH-UHFFFAOYSA-K 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- KETUDCKOKOGBJB-UHFFFAOYSA-K neodymium(3+);triacetate Chemical compound [Nd+3].CC([O-])=O.CC([O-])=O.CC([O-])=O KETUDCKOKOGBJB-UHFFFAOYSA-K 0.000 description 1
- 229910001682 nordstrandite Inorganic materials 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910001994 rare earth metal nitrate Inorganic materials 0.000 description 1
- 238000001226 reprecipitation Methods 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000011949 solid catalyst Substances 0.000 description 1
- 230000000087 stabilizing Effects 0.000 description 1
Family
ID=
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