JP7229927B2 - モリブデンを含む混合酸化物材料の製造方法 - Google Patents
モリブデンを含む混合酸化物材料の製造方法 Download PDFInfo
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- JP7229927B2 JP7229927B2 JP2019540553A JP2019540553A JP7229927B2 JP 7229927 B2 JP7229927 B2 JP 7229927B2 JP 2019540553 A JP2019540553 A JP 2019540553A JP 2019540553 A JP2019540553 A JP 2019540553A JP 7229927 B2 JP7229927 B2 JP 7229927B2
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- tellurium
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- niobium
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- mixed oxide
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- 239000000463 material Substances 0.000 title claims description 19
- 229910052750 molybdenum Inorganic materials 0.000 title claims description 13
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 title claims description 11
- 239000011733 molybdenum Substances 0.000 title claims description 11
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000002245 particle Substances 0.000 claims description 42
- 239000007858 starting material Substances 0.000 claims description 32
- 239000010955 niobium Substances 0.000 claims description 31
- 239000007787 solid Substances 0.000 claims description 25
- 229910052714 tellurium Inorganic materials 0.000 claims description 25
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims description 24
- LAJZODKXOMJMPK-UHFFFAOYSA-N tellurium dioxide Chemical compound O=[Te]=O LAJZODKXOMJMPK-UHFFFAOYSA-N 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 17
- 238000007254 oxidation reaction Methods 0.000 claims description 15
- 239000000725 suspension Substances 0.000 claims description 15
- 229910052758 niobium Inorganic materials 0.000 claims description 14
- 230000003647 oxidation Effects 0.000 claims description 14
- 229910052720 vanadium Inorganic materials 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 12
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims description 12
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 11
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 7
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 claims description 7
- XFHGGMBZPXFEOU-UHFFFAOYSA-I azanium;niobium(5+);oxalate Chemical compound [NH4+].[Nb+5].[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O XFHGGMBZPXFEOU-UHFFFAOYSA-I 0.000 claims description 6
- 229910000484 niobium oxide Inorganic materials 0.000 claims description 6
- 239000011261 inert gas Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- QGAVSDVURUSLQK-UHFFFAOYSA-N ammonium heptamolybdate Chemical compound N.N.N.N.N.N.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo] QGAVSDVURUSLQK-UHFFFAOYSA-N 0.000 claims description 2
- 239000007900 aqueous suspension Substances 0.000 claims description 2
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- XNHGKSMNCCTMFO-UHFFFAOYSA-D niobium(5+);oxalate Chemical compound [Nb+5].[Nb+5].[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O XNHGKSMNCCTMFO-UHFFFAOYSA-D 0.000 claims description 2
- UUUGYDOQQLOJQA-UHFFFAOYSA-L vanadyl sulfate Chemical compound [V+2]=O.[O-]S([O-])(=O)=O UUUGYDOQQLOJQA-UHFFFAOYSA-L 0.000 claims description 2
- 229910000352 vanadyl sulfate Inorganic materials 0.000 claims description 2
- 229940041260 vanadyl sulfate Drugs 0.000 claims description 2
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 claims 2
- 230000003213 activating effect Effects 0.000 claims 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 24
- 239000003054 catalyst Substances 0.000 description 20
- 238000009826 distribution Methods 0.000 description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 238000003756 stirring Methods 0.000 description 16
- 238000001354 calcination Methods 0.000 description 14
- 238000010438 heat treatment Methods 0.000 description 13
- 229910052757 nitrogen Inorganic materials 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 11
- 238000001027 hydrothermal synthesis Methods 0.000 description 11
- 238000003786 synthesis reaction Methods 0.000 description 11
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 9
- 229910003069 TeO2 Inorganic materials 0.000 description 8
- 230000004913 activation Effects 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 239000011230 binding agent Substances 0.000 description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 6
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 238000005839 oxidative dehydrogenation reaction Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 5
- 239000012065 filter cake Substances 0.000 description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000002441 X-ray diffraction Methods 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 4
- 239000012153 distilled water Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000003801 milling Methods 0.000 description 4
- -1 tellurium dioxide Chemical class 0.000 description 4
- 238000004438 BET method Methods 0.000 description 3
- 150000001335 aliphatic alkanes Chemical class 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 3
- 238000012512 characterization method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Inorganic materials O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 description 3
- 150000002825 nitriles Chemical class 0.000 description 3
- FXADMRZICBQPQY-UHFFFAOYSA-N orthotelluric acid Chemical compound O[Te](O)(O)(O)(O)O FXADMRZICBQPQY-UHFFFAOYSA-N 0.000 description 3
- DKCWBFMZNUOFEM-UHFFFAOYSA-L oxovanadium(2+);sulfate;hydrate Chemical compound O.[V+2]=O.[O-]S([O-])(=O)=O DKCWBFMZNUOFEM-UHFFFAOYSA-L 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 230000002572 peristaltic effect Effects 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- 239000001294 propane Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000002050 diffraction method Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 235000006408 oxalic acid Nutrition 0.000 description 2
- GEVPUGOOGXGPIO-UHFFFAOYSA-N oxalic acid;dihydrate Chemical compound O.O.OC(=O)C(O)=O GEVPUGOOGXGPIO-UHFFFAOYSA-N 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- 150000003498 tellurium compounds Chemical class 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 241000264877 Hippospongia communis Species 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 238000003991 Rietveld refinement Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- VXAUWWUXCIMFIM-UHFFFAOYSA-M aluminum;oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Al+3] VXAUWWUXCIMFIM-UHFFFAOYSA-M 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 239000011363 dried mixture Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000010335 hydrothermal treatment Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 229910003455 mixed metal oxide Inorganic materials 0.000 description 1
- WUJISAYEUPRJOG-UHFFFAOYSA-N molybdenum vanadium Chemical compound [V].[Mo] WUJISAYEUPRJOG-UHFFFAOYSA-N 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
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- 229910052703 rhodium Inorganic materials 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000790 scattering method Methods 0.000 description 1
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- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000003746 solid phase reaction Methods 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
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- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- XHGGEBRKUWZHEK-UHFFFAOYSA-L tellurate Chemical compound [O-][Te]([O-])(=O)=O XHGGEBRKUWZHEK-UHFFFAOYSA-L 0.000 description 1
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- 229910052726 zirconium Inorganic materials 0.000 description 1
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- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
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- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
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- C01B19/00—Selenium; Tellurium; Compounds thereof
- C01B19/002—Compounds containing, besides selenium or tellurium, more than one other element, with -O- and -OH not being considered as anions
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Description
M1:Mo1V0.15Te0.12Nb0.128O3.7またはMo7.8V1.2Te0.937Nb1O28.9
M2:*Mo1V0.32Te0.42Nb0.08O4.6またはMo4.31V1.36Te1.81Nb0.33O19.81
a)テルル+4の酸化状態にある、モリブデン、バナジウム、ニオブ、およびテルル含有出発化合物を含む出発化合物の混合物の製造する工程、
b)出発化合物の混合物を100℃~300℃の温度で水熱処理して生成物懸濁液を得る工程、
c)ステップb)から得られた生成物懸濁液からの固体の分離と乾燥する工程、
d)不活性ガス中の固体の活性化し混合酸化物材料を得る工程、
ここで、テルル含有出発化合物の粒子径D90が100μmより小さいことを特徴とする。
本発明による方法によって形成された本発明によるMoVNbTe混合酸化物のX線回折図は、回折反射h、i、k、およびlを示し、これらはほぼ回折角(2θ)26.2°±0.5°(h)、27.0°±0.5°(i)、7.8°±0.5°(k)、および28.0°±0.5°(l)で頂点を有し、ここで、回折反射h、i、k、およびlの強度Ph、Pi、Pk、Pl、は、以下に示す関係を満たすことができ、Rx(x=1~3)は、その関係によって定義される強度比である。
R1=Ph/(Ph+Pi)>0.3、好ましくは>0.35、より好ましくは>0.4、および/または
R2=Pi/(Pi+Pl)>0.5、好ましくは>0.6、より好ましくは>0.63、および/または
R3=Pi/(Pi+Pk)<0.8、好ましくは<0.75、より好ましくは<0.7。
次の方法を使用して、得られたMoVNbTe混合酸化物のパラメーターを測定した。
1.BET表面積
測定は、DIN66131に記載されているBETメソッドに従って実行された。BETの方法は、J. Am. Chem. Soc. 60,309 (1938)に公開されている。測定するサンプルは、U字型石英反応器でアルゴン雰囲気下で200℃で乾燥した(F=50ml(分)、1.5時間)。次いで、反応器を室温まで冷却し、排気し、液体窒素のデュワー瓶に浸した。窒素吸着は、RXM100吸着システム(AdvancedScientificDesign、Inc.)を使用して77Kで実行した。
X線回折図は、X線粉末回折法(XRD)により得られ、シェラーの式に従って分析された。XRDスペクトルは、600℃の窒素中で活性化された触媒材料で測定された。Philips PW3710ベースのPW1050 Bragg-Brentanoパラフォーカシングゴニオメーターで、40kVおよび35mAで、Cu-K-放射(波長=0.15418nm)、グラファイトモノクロメーター、および比例カウンターを使用して測定値を取得した。XRDスキャンは、0.04°(2シータ、2θ)の増分でデジタル記録された。SiCは、相定量化の内部標準として追加された。このために約5%のSiCが追加され、量は正確に計量された。この量は、フェーズ分析に記載されてる。位相分析は、Topasソフトウェアを使用したリートベルト法によって実行された。このフェーズ分析の結果は、XRDの図に示した。目的のM1相の正確な量は、サンプル全体のM1相の割合(前述)をSiCを含まないサンプルに関連付けることによって計算された。
粒径分布は、レーザー散乱法によって測定された。これは、Malvern Mastersizer 2000を使用して行った。分析は、フラウンホーファー法(Fraunhofer)によって行った。
例1
オートクレーブ(40L)に3.3Lの蒸留H2Oを投入し、攪拌しながら80℃に加熱した。同時に、725.58gのヘプタモリブデン酸アンモニウム四水和物(HC Starck製)を加えて溶解した(AHM溶液)。それぞれ1.65Lの蒸留H2Oで満たされた2つの5Lビーカーを、温度制御された磁気スターラーで攪拌しながら80℃まで同様に加熱した。次に、これらのビーカーに、405.10gの硫酸バナジル水和物(GfE製、V含有量21.2%)および185.59gのシュウ酸ニオブアンモニウム(HC Starck、Nb含有量:20.6%)(V溶液およびNb溶液)をそれぞれ加えて溶解した。
D10=7.625μm、D50=15.14μm、D90=27.409μm
生成物の分析的特性評価:
BET=15m2/g
XRD:
例1の混合酸化物材料のXRDを図2に示し、次の相分布を示す。
M1=90.50%
M2=2.82%
(Mo0.9V1.1)O5=1.15%
SiC(標準)=5.53%
オートクレーブ(40L)に6.6Lの蒸留H2Oを投入し、攪拌しながら80℃に加熱した。同時に、1451.16gのヘプタモリブデン酸アンモニウム四水和物(HC Starck)を加えて溶解した(AHM溶液)。それぞれ3.3Lの蒸留H2Oで満たされた2つの5Lビーカーを、温度制御された磁気スターラーで攪拌しながら80℃に加熱した。その後、これらのビーカーにそれぞれ810.21gの硫酸バナジル水和物(GfE、V含有量21.2%)と370.59gのシュウ酸ニオブアンモニウム(HC Starck、Nb含有量:20.6%)(V溶液およびNb溶液)をそれぞれ溶解した。
D10=16.45μm、D50=43.46μm、D90=236.48μm
比較例1のMoVNbTe混合酸化物のXRDを図4に示し、以下の相分布を示す。
M1=51.88%
M2=8.12%
(Mo0.9V1.1)O5=12.51%
(V0.35Mo4.65)O14=23.19%
SiC(標準)=3.59%
オートクレーブ(40L)に3.3Lの蒸留H2Oを投入し、攪拌しながら80℃に加熱した。同時に、725.58gのヘプタモリブデン酸アンモニウム四水和物(HC Starck)を加えて溶解した(AHM溶液)。それぞれ1.65Lの蒸留H2Oで満たされた2つの5Lビーカーを、温度制御された磁気スターラーで攪拌しながら80℃まで同様に加熱した。次に、これらのビーカーに、405.10gの硫酸バナジル水和物(GfE、V含有量21.2%)および185.59gのシュウ酸ニオブアンモニウム(HC Starck、Nb含有量:20.6%)(V溶液およびNb溶液)をそれぞれ加えて溶解した。
D10=0.569μm、D50=2.992μm、D90=6.326μm
生成物の分析的特性評価:
BET=12m2/g
例2のMoVNbTe混合酸化物のXRDを図6に示し、以下に相分布を示す。
M1=86.30%
M2=2.78%
(Mo0.9V1.1)O5=0.75%
(V0.35Mo4.65)O14=3.75%
SiC(標準)=5.01%
最初に、TeO2(比較例1のAlpha Aesar)を200gの蒸留H2Oでスラリー化し、ボールミルで粉砕した(例2と同様)。次に、その部分を500mlの蒸留H2Oを含むビーカーに移した。Nb2O5を200gの蒸留H2Oでスラリー化し、同じボールミルで粉砕した。粉砕前後の粒径分布の比較を図7に示す。
M1=85.79%
M2=1.95%
(Mo0.9V1.1)O5=1.43%
MoO3=3.31%
Nb2O5=2.86%
SiC(標準)=4.66%
まず、TeO2(比較例1のAlfa Aesar)を200gの蒸留H2Oでスラリー化し、ボールミルで(例2と同様に)粉砕した後、ビーカー内の水の量が1650mlになるようにビーカーに移した。
M1=17.34%
M2=1.75%
(V0.35Mo4.65)O14=34.35%
MoVO5=24.57%
TeMo6O16=17.39%
SiC(標準)=4.6%
Claims (6)
- 式Mo 1 V a Te b Nb c O x である(ここで、a=0.15~0.3、b=0.1~0.25、c=0.1~0.2、xは、金属(Mo、V、Te、およびNb)の酸化状態に従い、電荷を相殺するために必要な値となり)
モリブデン、バナジウム、ニオブ、テルルの各元素を含む混合酸化物材料の製造方法であって、
a)テルルが+4の酸化状態にあり、モリブデン、バナジウム、ニオブ、およびテルル含有出発化合物を含む出発化合物の混合物を製造する工程、
b)出発化合物の混合物を100℃~300℃の温度で水熱処理して生成物懸濁液を得る工程、
c)工程b)から得られた生成物懸濁液から固体の分離と乾燥を行う工程、
d)不活性ガス中で固体を活性化して混合酸化物材料を得る工程を含み、
テルル含有出発化合物が100μm未満の粒径D90を有し、
ニオブ含有出発化合物の粒径D50が50μm未満であり、
テルル含有出発化合物が、二酸化テルルであり、
前記二酸化テルルの粒径D50が35μm未満であることを特徴とする前記製造方法。 - 出発化合物の混合物が水性懸濁液であることを特徴とする、請求項1に記載の方法。
- 出発化合物の1つがヘプタモリブデン酸アンモニウムまたは三酸化モリブデンであることを特徴とする、請求項1または2に記載の方法。
- 出発化合物の1つがメタバナジン酸アンモニウム、硫酸バナジルまたは五酸化バナジウムであることを特徴とする、請求項1~3のいずれか一項に記載の方法。
- 出発化合物の1つがシュウ酸ニオブアンモニウム、シュウ酸ニオブまたは酸化ニオブであることを特徴とする、請求項1~4のいずれか一項に記載の方法。
- 式Mo 1 V a Te b Nb c O x 中において、a=0.2~0.3である、請求項1~5のいずれか一項に記載の方法。
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EP3576872A2 (de) | 2019-12-11 |
CN110234430A (zh) | 2019-09-13 |
US11007509B2 (en) | 2021-05-18 |
KR20190115031A (ko) | 2019-10-10 |
WO2018141651A9 (de) | 2018-10-25 |
US20190366311A1 (en) | 2019-12-05 |
WO2018141651A2 (de) | 2018-08-09 |
WO2018141651A3 (de) | 2018-12-13 |
JP2020514227A (ja) | 2020-05-21 |
CN110234430B (zh) | 2022-10-18 |
KR102283634B1 (ko) | 2021-08-02 |
DE102017000848A1 (de) | 2018-08-02 |
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