JP2018532442A - 呼吸保護のための濾材 - Google Patents
呼吸保護のための濾材 Download PDFInfo
- Publication number
- JP2018532442A JP2018532442A JP2018506134A JP2018506134A JP2018532442A JP 2018532442 A JP2018532442 A JP 2018532442A JP 2018506134 A JP2018506134 A JP 2018506134A JP 2018506134 A JP2018506134 A JP 2018506134A JP 2018532442 A JP2018532442 A JP 2018532442A
- Authority
- JP
- Japan
- Prior art keywords
- iron
- range
- oxide material
- manganese oxide
- salt
- 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.)
- Withdrawn
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- 230000000241 respiratory effect Effects 0.000 title claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 59
- 238000000034 method Methods 0.000 claims abstract description 59
- 239000011572 manganese Substances 0.000 claims abstract description 31
- 238000001914 filtration Methods 0.000 claims abstract description 18
- 239000011148 porous material Substances 0.000 claims abstract description 8
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 4
- 230000003647 oxidation Effects 0.000 claims abstract description 3
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 3
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims description 110
- 239000002244 precipitate Substances 0.000 claims description 35
- 239000008187 granular material Substances 0.000 claims description 33
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000007789 gas Substances 0.000 claims description 18
- WAEMQWOKJMHJLA-UHFFFAOYSA-N Manganese(2+) Chemical class [Mn+2] WAEMQWOKJMHJLA-UHFFFAOYSA-N 0.000 claims description 17
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 17
- 239000011833 salt mixture Substances 0.000 claims description 17
- 238000001035 drying Methods 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 8
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical class [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 claims description 7
- VBIXEXWLHSRNKB-UHFFFAOYSA-N ammonium oxalate Chemical compound [NH4+].[NH4+].[O-]C(=O)C([O-])=O VBIXEXWLHSRNKB-UHFFFAOYSA-N 0.000 claims description 7
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical class [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 23
- 238000012360 testing method Methods 0.000 description 21
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 17
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 12
- 239000008367 deionised water Substances 0.000 description 9
- 229910021641 deionized water Inorganic materials 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- 239000010949 copper Substances 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000008188 pellet Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- -1 ammonia Chemical class 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000003463 adsorbent Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000000197 pyrolysis Methods 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 238000013019 agitation Methods 0.000 description 3
- 238000001354 calcination Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000005119 centrifugation Methods 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 238000000975 co-precipitation Methods 0.000 description 3
- 238000003760 magnetic stirring Methods 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 239000011541 reaction mixture Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 229910002554 Fe(NO3)3·9H2O Inorganic materials 0.000 description 2
- 229930040373 Paraformaldehyde Natural products 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 150000001242 acetic acid derivatives Chemical class 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- CESXSDZNZGSWSP-UHFFFAOYSA-L manganese(2+);diacetate;tetrahydrate Chemical compound O.O.O.O.[Mn+2].CC([O-])=O.CC([O-])=O CESXSDZNZGSWSP-UHFFFAOYSA-L 0.000 description 2
- ISPYRSDWRDQNSW-UHFFFAOYSA-L manganese(II) sulfate monohydrate Chemical compound O.[Mn+2].[O-]S([O-])(=O)=O ISPYRSDWRDQNSW-UHFFFAOYSA-L 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 150000002823 nitrates Chemical class 0.000 description 2
- 229920002866 paraformaldehyde Polymers 0.000 description 2
- 230000002572 peristaltic effect Effects 0.000 description 2
- 238000000634 powder X-ray diffraction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910052594 sapphire Inorganic materials 0.000 description 2
- 239000010980 sapphire Substances 0.000 description 2
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 2
- 238000000527 sonication Methods 0.000 description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000005749 Copper compound Substances 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 239000002841 Lewis acid Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 150000001880 copper compounds Chemical class 0.000 description 1
- PUFKGWVZPFANLN-UHFFFAOYSA-N dioxomanganese oxocopper Chemical compound O=[Cu].O=[Mn]=O PUFKGWVZPFANLN-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 229910052809 inorganic oxide Inorganic materials 0.000 description 1
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical group O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 description 1
- MVFCKEFYUDZOCX-UHFFFAOYSA-N iron(2+);dinitrate Chemical compound [Fe+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MVFCKEFYUDZOCX-UHFFFAOYSA-N 0.000 description 1
- YHGPYBQVSJBGHH-UHFFFAOYSA-H iron(3+);trisulfate;pentahydrate Chemical compound O.O.O.O.O.[Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O YHGPYBQVSJBGHH-UHFFFAOYSA-H 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 239000005078 molybdenum compound Substances 0.000 description 1
- 150000002752 molybdenum compounds Chemical class 0.000 description 1
- 150000004690 nonahydrates Chemical class 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000005297 pyrex Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
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- A62B19/02—Cartridges with absorbing substances for respiratory apparatus with oxidising agents
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- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
- A62B23/02—Filters for breathing-protection purposes for respirators
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- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D9/00—Composition of chemical substances for use in breathing apparatus
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- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- B01J20/0225—Compounds of Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt
- B01J20/0229—Compounds of Fe
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Abstract
【選択図】図1
Description
呼吸フィルタのカートリッジに用いられる吸着剤は、典型的には、活性炭をベースとしている。活性炭の特質は、高表面積及び有機蒸気を吸着する能力である。活性炭は、概して、アンモニア等の低沸点の極性化合物の吸着が不十分であるため、追加の材料を表面に加え、化学反応によってこれらの汚染物質を除去する。
本開示は、呼吸保護のための濾材に関する。特に、当該濾材は、呼吸気流から有害ガスを除去することができる鉄ドープ酸化マンガン材料等の、酸化マンガン材料である。当該鉄ドープ酸化マンガン材料は、低温水系レドックス共沈法又はシュウ酸塩熱分解法のいずれかを用い、調製することができる。
以下の詳細な説明では、本明細書の一部を形成し、いくつかの具体的な実施形態を例示として示す添付の図面を参照する。本開示の範囲又は趣旨から逸脱することなく、他の実施形態が想定され、かつ実施され得ることを理解されたい。したがって、以下の詳細な説明は、限定的な意味では解釈しないものとする。
ドープした酸化マンガン試料は、完全な反応混合物中の金属のモル比に従って命名する。例えば、80Mn20FeOxは、Mn含有試薬対Fe含有試薬を4:1のモル比で含有した反応混合物から得た材料を指す。
実施例1は100:0のMn:Feである
実施例2は90:10のMn:Feである
実施例3は85:15のMn:Feである
実施例4は80:20のMn:Feである
実施例5は75:25のMn:Feである。
MnSO4/FeSO4混合溶液(0.25M)を、MnSO4・H2O及びFeSO4・7H2Oを以下のMn:Feモル比で脱イオン水400mLに溶解して調製した:
実施例6は100:0のMn:Feである
実施例7は90:10のMn:Feである
実施例8は80:20のMn:Feである。
(NH4)2C2O4溶液(0.25M)を、(NH4)2C2O4・H2O(Alfa Aesar)14.2gを脱イオン水400mLに溶解して調製した。(NH4)2C2O4溶液のpHを、8(体積)%のNH3・H2Oを用い、7〜8に調整した。Masterflex蠕動ポンプを用い、得られた(NH4)2C2O4溶液を、MnSO4/FeSO4溶液に、穏やかな超音波処理(Branson Sonifier 450、20W)を適用しながら、2時間超の時間をかけ、ゆっくりと加えた。沈殿した固体の生成が、2時間の間に観察された。(NH4)2C2O4溶液の添加終了後、沈殿物を遠心分離により分離し、pHが約7に達するまで、脱イオン水で繰り返し洗浄した。次いで、生成物を、60℃のオーブン内において、空気中で終夜乾燥した。次に、乾燥したシュウ酸塩沈殿物を、乳鉢及び乳棒で粉砕し、225℃で6時間、空気中で加熱し、最終粉末を得た。続いて、粉末を、17mmのダイス及び液圧プレスを用い、8000PSIの圧力を用い、ペレットに成形した。次に、ペレットを粉砕し、20×40の顆粒にサイズを調整した。実施例8−Cuは、FeSO4・7H2Oの代わりにCuSO4・5H2Oを用い、更に、最終の加熱時間を250℃で5時間として、上記のように調製した。
管試験
管試験装置を破過試験に用いた。用いた試料管は、ベース付近に細かいステンレス鋼メッシュを有するポリ塩化ビニル(PVC)(内径=6.5mm)で構成されている。これらの管に、規定容積の試験用濾材顆粒を充填し、下端部を硬質の表面に繰り返しタッピングし、一定の容積に充填する。試料管を、ultra−torr(Swagelok)継手を用い、可撓性のテフロンチューブに連結する。次いで、所望の濃度のチャレンジガスを、垂直管を通し、管の上(入口)部分を経由して規定の流量で供給し、更に、管の下端(出口)を通過して吸着床から流出する流出ガスを検出器に移し、分析する。
市販供給業者から得た、又は、所定の実施例に従って調製した濾材顆粒の、容積1.7cc相当の試料を、上で概説した管試験装置に移し、秤量した。肉眼で著しい容積の減少が観察されなくなるまで、濾材顆粒をタッピングした。次いで、Linde(Whitby,ON,Canada)の認定ガス混合物からの空気中に1000±10%ppmの二酸化硫黄(SO2)を含有する約200mL/分の試験流に、管内の試料を暴露した。濾材顆粒の下流の空気を、MIRAN SapphIRe IR携帯型空気分析器を用いる、又は、pHの変化(Fortier et al.Appl.Surf.Sci.2007,253,3201〜3207)によるいずれかにより、破過についてモニターした。破過時間は、試料の下流で20ppmの濃度が観察された時間と規定した。
市販供給業者から得た、又は、所定の実施例に従って調製した濾材顆粒の、容積1.7cc相当の試料を、上で概説した管試験装置に移し、秤量した。肉眼で著しい容積の減少が観察されなくなるまで、濾材顆粒をタッピングした。次いで、Linde(Whitby,ON,Canada)の認定ガス混合物からの空気中に1000±10%ppmのアンモニア(NH3)を含有する約200mL/分の試験流に、管内の試料を暴露した。濾材顆粒の下流の空気を、MIRAN SapphIRe IR携帯型空気分析器を用いる、又は、pHの変化(Fortier et al.J.Coll.Interf.Sci.2008,320,423〜435)によるいずれかにより、破過についてモニターした。破過時間は、試料の下流で20ppmの濃度が観察された時間と規定した。
用いた試料管は、ベース付近にASTM Aガラスフリット(145〜175μm)を有するガラス(内径=9mm)で構成されている。これらの管に、容積0.9ccの試験用濾材顆粒を充填する。下端部を硬質の表面に繰り返しタッピングし、これらの試験用濾材顆粒を一定の容積に充填する。試料管を、ultra−torr(Swagelok)継手を用い、可撓性のテフロンチューブに連結する。次に、所望の濃度のホルムアルデヒドを、垂直管を通し、管の上(入口)部分を経由して規定の流量で供給し、更に、管の下端(出口)を通過して吸着床から流出する流出ガスを検出器に移す。この場合、出口のガス流は、メタナイザを用い、二酸化炭素(CO2)及びホルムアルデヒド(HCHO)をメタン(CH4)に変換し、SRIガスクロマトグラフ(GC)により分析した。フレームイオン化検出器(FID)を用い、CO2及びHCHOについて固有の時間に通過するメタンを検出した。GCのカラムは30m、内径0.53mmのRT U−Bond(Restek)であった。次いで、パラホルムアルデヒド粉末を用いて調製したパラホルムアルデヒドの揮発試料からの空気中に250ppmのHCHOを含有する約250mL/分の試験流に、管内の試料を暴露した。濾材顆粒の下流の空気を、SRI GCを用い、破過についてモニターした。破過時間は、試料の下流で1ppmの濃度が観察された時間と規定した。
Phillips PW1720 X線発生装置を用い、電圧40kVかつ電流30mAで作動させ、粉末X線回折パターンを収集した。このシステムは、Cu Kα放射線源(波長=1.54178Å)及び回折ビームモノクロメータを備えている。典型的な条件は、走査速度0.05°/ステップ、及び滞留時間40秒/ステップであった。試料を微粉に粉砕し、アルミニウム試料ホルダーに固定した。
N2吸着等温線及び細孔径分布を、Micromeritics ASAP2010を用い、77Kで測定した。測定前に試料を150℃で2〜3日間脱気し、残留水分を除去した。細孔径分布は、Micromeritics提供のソフトウェア(ASAP 2010 V5.03C)を用い、BJH法(1〜300nm)を用い、測定した。BJH方は既知の方法であり、E.P.Barrett,L.G.Joyner,P.H.Halenda,J.Am.Chem.Soc.73(1951)373に記載されている。
1全ての濾材顆粒は、20×40メッシュサイズで試験した。
2試料容積:1.7cc(SO2、NH3)、0.9cc(HCHO)
3破過時間についての2〜3回の試験の平均
4Calgon Carbon Company(Pittsburgh,PA,USA)より市販のCalgon URC(入手状態)。
5Carus Corporation(Peru,IL,USA)より市販のCarulite(入手状態で、20×40メッシュの顆粒にサイズを調整した)。
6Nは、試験が実施されなかったことを示す。
MnSO4/FeSO4混合溶液(0.25M)を、MnSO4・H2O及びFeSO4・7H2Oを以下のMn:Feのモル比で溶解して調製した:
実施例9は80:20のMn:Feである
実施例10は90:10のMn:Cuである
1Nは、試験が実施されなかったことを示す。
1全ての濾材顆粒は、20×40メッシュサイズで試験した。
2試料容積:1.7cc(SO2、NH3)、0.9cc(HCHO)
3破過時間についての2〜3回の試験の平均
4Nは、試験が実施されなかったことを示す。
Claims (17)
- 空気流入口及び空気流出口を有し、かつある量の濾過媒体を流体連通内及び前記空気流入口と前記空気流出口との間に収容する、ハウジングを備え、
前記濾過媒体が、1〜4nmの範囲の平均細孔径(BJH法)と、少なくとも300m2/g、又は少なくとも350m2/g、又は少なくとも400m2/gの表面積(BET)とを有する鉄ドープ酸化マンガン材料を含む、呼吸保護フィルタ。 - 前記鉄ドープ酸化マンガン材料が、周囲条件において、又は、大気圧かつ−20〜40℃かつ相対湿度5%〜95%において、前記濾過媒体を通過する空気流から有害ガスを除去することができる、請求項1に記載の呼吸保護フィルタ。
- 前記鉄ドープ酸化マンガン材料が、マンガン:鉄のモル比が95:5〜70:30の範囲、又は好ましくは80:20〜85:15の範囲である化学反応から生成される、請求項1又は2に記載の呼吸保護フィルタ。
- 前記鉄ドープ酸化マンガン材料が、米国標準ふるい系列で12〜50又は20〜40の範囲のメッシュサイズを有する顆粒を画定する、請求項1〜3のいずれか一項に記載の呼吸保護フィルタ。
- 前記鉄ドープ酸化マンガン材料が、1.3g/mL未満、若しくは1g/mL未満、若しくは0.8g/mL未満、若しくは0.7g/mL未満の見かけ密度又はかさ密度を有する、請求項1〜4のいずれか一項に記載の呼吸保護フィルタ。
- 前記鉄ドープ酸化マンガン材料が、圧縮形成された顆粒の形態である、請求項1〜5のいずれか一項に記載の呼吸保護フィルタ。
- 鉄(III)塩をマンガン(II)塩と水中で組み合わせ、水性塩混合物を生成させる工程と、
過マンガン酸塩溶液を前記水性塩混合物とブレンドし、湿潤状態の沈殿物を生成させる工程と、
前記沈殿物を分離し、かつ乾燥させ、鉄ドープ酸化マンガン材料を生成させる工程と、
を含む、方法。 - 前記方法が、全ての方法工程について115℃以下である処理温度を有する、請求項7に記載の方法。
- 前記ブレンドする工程が、20〜30℃の範囲の処理温度を有する、請求項7又は8に記載の方法。
- 前記組み合わせる工程が、マンガン(II)塩:鉄(III)塩のモル比を95:5〜70:30の範囲、又は好ましくは80:20〜85:15の範囲で組み合わせることを含む、請求項7〜9のいずれか一項に記載の方法。
- 前記鉄ドープ酸化マンガン材料を、米国標準ふるい系列で12〜50若しくは20〜40の範囲のメッシュサイズを有する顆粒に顆粒化又は圧縮する工程を更に含む、請求項7〜10のいずれか一項に記載の方法。
- 前記鉄ドープ酸化マンガン材料を呼吸保護フィルタ中に配置する工程を更に含む、請求項7〜11のいずれか一項に記載の方法。
- 鉄(II)塩をマンガン(II)塩と水中で組み合わせ、水性塩混合物を生成させる工程と、
pHが7〜8の範囲であるシュウ酸アンモニウム溶液を調製する工程と、
前記シュウ酸アンモニウム溶液を前記水性塩混合物とブレンドし、湿潤状態のシュウ酸Fe/Mn沈殿物を生成させる工程と、
前記湿潤状態のシュウ酸Fe/Mn沈殿物を乾燥させ、水を除去して乾燥状態のシュウ酸Fe/Mn沈殿物を生成させる工程と、
前記乾燥状態のシュウ酸Fe/Mn沈殿物を200〜250℃の範囲の温度で加熱し、鉄ドープ酸化マンガン材料を生成させる工程と、
を含む、方法。 - 前記ブレンドする工程が超音波混合を含む、請求項13に記載の方法。
- 前記組み合わせる工程が、マンガン(II)塩:鉄(II)塩のモル比を95:5〜70:30の範囲、又は好ましくは80:20〜85:15の範囲で組み合わせることを含む、請求項13又は14に記載の方法。
- 前記鉄ドープ酸化マンガン材料を、米国標準ふるい系列で12〜50若しくは20〜40の範囲のメッシュサイズを有する顆粒に顆粒化又は圧縮する工程を更に含む、請求項13〜15のいずれか一項に記載の方法。
- 前記鉄ドープ酸化マンガン材料を呼吸保護フィルタ中に配置する工程を更に含む、請求項13〜16のいずれか一項に記載の方法。
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2016
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CA2994821A1 (en) | 2017-02-09 |
EP3331632A2 (en) | 2018-06-13 |
EP3331632B1 (en) | 2020-11-25 |
RU2687947C1 (ru) | 2019-05-16 |
CN107921352B (zh) | 2021-06-25 |
US10806954B2 (en) | 2020-10-20 |
AU2016301347A1 (en) | 2018-03-01 |
WO2017024116A2 (en) | 2017-02-09 |
AU2016301347B2 (en) | 2019-03-07 |
KR20180037995A (ko) | 2018-04-13 |
CL2018000342A1 (es) | 2018-05-25 |
BR112018002519A2 (pt) | 2018-09-18 |
WO2017024116A3 (en) | 2017-03-16 |
US20180221692A1 (en) | 2018-08-09 |
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