JP6298001B2 - 捕捉対象成分の置換システム、オイル劣化成分の置換システム、および内燃機関用オイルフィルタ - Google Patents
捕捉対象成分の置換システム、オイル劣化成分の置換システム、および内燃機関用オイルフィルタ Download PDFInfo
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- JP6298001B2 JP6298001B2 JP2015060882A JP2015060882A JP6298001B2 JP 6298001 B2 JP6298001 B2 JP 6298001B2 JP 2015060882 A JP2015060882 A JP 2015060882A JP 2015060882 A JP2015060882 A JP 2015060882A JP 6298001 B2 JP6298001 B2 JP 6298001B2
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- 238000000034 method Methods 0.000 claims description 61
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- 239000000377 silicon dioxide Substances 0.000 claims description 51
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 44
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- 239000000391 magnesium silicate Substances 0.000 claims description 12
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- 125000000217 alkyl group Chemical group 0.000 description 5
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- 150000004703 alkoxides Chemical class 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 125000003277 amino group Chemical group 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
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- 239000002131 composite material Substances 0.000 description 3
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- 238000012844 infrared spectroscopy analysis Methods 0.000 description 3
- 150000002484 inorganic compounds Chemical class 0.000 description 3
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- 239000000395 magnesium oxide Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
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- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
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- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
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- 239000002585 base Substances 0.000 description 2
- 239000003637 basic solution Substances 0.000 description 2
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- 238000006731 degradation reaction Methods 0.000 description 2
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- 150000004820 halides Chemical class 0.000 description 2
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- 238000010438 heat treatment Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
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- 239000003960 organic solvent Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 125000000094 2-phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
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- 238000004438 BET method Methods 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
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- 101100101616 Drosophila melanogaster uex gene Proteins 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- MWCLLHOVUTZFKS-UHFFFAOYSA-N Methyl cyanoacrylate Chemical compound COC(=O)C(=C)C#N MWCLLHOVUTZFKS-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 125000002252 acyl group Chemical group 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 238000004517 catalytic hydrocracking Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium oxide Inorganic materials O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 150000003840 hydrochlorides Chemical class 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 125000001841 imino group Chemical group [H]N=* 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052809 inorganic oxide Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000006317 isomerization reaction Methods 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 239000003879 lubricant additive Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- CDZOGLJOFWFVOZ-UHFFFAOYSA-N n-propylaniline Chemical compound CCCNC1=CC=CC=C1 CDZOGLJOFWFVOZ-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- PVADDRMAFCOOPC-UHFFFAOYSA-N oxogermanium Chemical compound [Ge]=O PVADDRMAFCOOPC-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 1
- 125000004437 phosphorous atom Chemical group 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- WGYKZJWCGVVSQN-UHFFFAOYSA-N propylamine Chemical group CCCN WGYKZJWCGVVSQN-UHFFFAOYSA-N 0.000 description 1
- ZQZJKHIIQFPZCS-UHFFFAOYSA-N propylurea Chemical compound CCCNC(N)=O ZQZJKHIIQFPZCS-UHFFFAOYSA-N 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000001174 sulfone group Chemical group 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
Description
Z−O−H (4)
(式(4)中、Zは、炭素原子、リン原子、硫黄原子、窒素原子、または、ハロゲン原子を示す。)
1.供試多孔体
評価に用いた多孔体の窒素ガス吸着法による中心細孔直径、比表面積および細孔容積の測定値を表1に、水銀圧入法(水銀圧入式ポロシメータ)によるそれらの測定値を表2に示す。
使用機器:Quantachrome社製、ポアマスター60GT
測定範囲:約1〜60,000psi(約4nm〜200μm)
解析方法:Washburn法
表面張力:480.0mN/m2
接触角:140.0°
供試オイル中にそれぞれ多孔体を分散させ、濾過後のオイル成分をフーリエ変換赤外分光分析(FT−IR)により解析して、劣化物捕捉と添加剤放出を定量した。
ベースオイルに添加剤であるZnDTP(摩耗防止剤)、ギ酸(劣化成分)をそれぞれ配合して、供試オイルを作製した。ギ酸の濃度が高い供試オイルの作製時にはギ酸の分散性を高めるためコハク酸イミド(分散剤)を2質量%加えた。
(2)ベースオイル+ギ酸(0.065質量%)
(3)ベースオイル+コハク酸イミド(2質量%)+ギ酸(1質量%、5質量%)
ベースオイルとして、GroupIIIベースオイル:YUBASE4(SK Corporation社)、動粘度:19.7mm2/s(40℃)、4.2mm2/s(100℃),S<10ppm、水素化分解・異性化鉱油を用いた。
[摩耗防止剤]
ZnDTP:LZ1371(日本ルーブリゾール社)secondaryタイプ
[劣化成分]
ギ酸:和光純薬工業 060−00486 88.0%
[分散剤]
コハク酸イミド:LZ6412(日本ルーブリゾール社)
ベースオイル+ZnDTP(0.8質量%)に多孔体0.3質量%を入れ、ホットスターラ(アズワン製HSH−6D)を用いて撹拌した。撹拌条件は、回転子回転数:200rpm、オイル温度:80℃、撹拌時間:4時間とした。撹拌後のオイルを図1に示す濾過装置を用いてメンブランフィルタ(住友電工製POREFLON FP045 ポアサイズ:0.45μm)により濾過した後、回収した多孔体をヘキサンで洗浄して表面に付着したオイル分を除去した。
ベースオイル+ギ酸(0.065質量%):10gにZnDTPを吸着させた多孔体30mg(0.3質量%)を添加し、ホットスターラを用いて撹拌した。撹拌条件は、回転子回転数:200rpm、オイル温度:28℃、撹拌時間:4時間とした。撹拌後のオイルを図1に示す濾過装置により濾過した。
3−1.オイル成分解析
供試オイルと多孔体を分散させた後の濾過後オイルの成分をフーリエ変換赤外分光分析装置(FT−IR)により解析した。装置仕様と解析条件を以下に示す。
使用セル:JASCO 液体用固定セル KBr t=0.1mm
積算回数:32回
多孔体に吸着したZnDTPの定量は、多孔体分散前後の供試オイルとベースオイルとの差スペクトルによりZnDTP(波数:970cm−1)のピーク高さを測定して、その減少割合から求めた。図2にスペクトル例を示す。
ZnDTPを吸着させた多孔体によるギ酸捕捉の定量は、ギ酸中C−Oの伸縮振動(波数:1210cm−1)のピーク高さ減少割合から求め、オイル中へのZnDTP放出の定量は、ZnDTP(波数:970cm−1)のピーク高さを測定して求めた。図3にギ酸捕捉スペクトル例を、図4にはZnDTPが放出された場合のスペクトル例を示す。
4−1.多孔体への添加剤吸着
ベースオイル+ZnDTP(0.8質量%)に多孔体(0.3質量%)を分散させてZnDTPの吸着を評価した結果を図5に示す。窒素ガス吸着法での多孔体の中心細孔径:2nm以上、比表面積:500m2/g以上、細孔容積:0.6cm3/g以上(図5の表中:○)を全て満たすメソポーラスシリカ2,3およびケイ酸マグネシウムにおけるZnDTP捕捉率が高く、劣化成分との置き換わりの可能性が高いと推察される(図5参照)。なお、従来技術(特表2008−540123号公報)の水銀圧入法による多孔体の物性測定結果では、粒子間での値が主体であると考えられ、窒素ガス吸着法による多孔体の物性測定結果との相関がみられないことがわかる(図11参照)。
ベースオイル+ギ酸(0.065質量%):10gにZnDTPを吸着させたメソポーラスシリカ3:30mg(0.3質量%)を分散させたときのギ酸捕捉とZnDTP放出の割合を図6に示す。ギ酸濃度0.065質量%においてはすべてのギ酸が捕捉され、メソポーラスシリカに吸着されていたZnDTPの10%がオイル中に放出された。一方、ギ酸が配合されていないベースオイル中におけるZnDTP放出割合は3%(図7参照)であり、ギ酸の共存によりZnDTPの放出割合が増加することがわかる。この結果から、ZnDTPとギ酸との置き換わりの可能性が考えられる。そこで、供試オイルとして、ベースオイル+コハク酸イミド(2質量%)+ギ酸(1質量%、5質量%)を用いて、ギ酸濃度による置き換わりへの影響を評価した結果、細孔径4nmにおいてギ酸濃度が高くなるほどギ酸の捕捉量、ZnDTPの放出量がより増加することがわかった(図8参照)。
ベースオイル+コハク酸イミド(2質量%)+ギ酸(5質量%):10gにZnDTPを吸着させた多孔体30mg(0.3質量%)を分散させたときの多孔体のZnDTP放出量を図9に示す。ZnDTPの放出量は、メソポーラスシリカ3とケイ酸マグネシウムが多く、酸化マグネシウムにおいては少ないことがわかる。また、ZnDTPの放出が多いメソポーラスシリカ3とケイ酸マグネシウムはギ酸も捕捉できており、ZnDTPとギ酸の置き換わり効果が確認できた(図10参照)。
Claims (3)
- 液状有機化合物に含まれる捕捉対象成分を捕捉して、添加剤を放出する捕捉対象成分の置換システムであって、
窒素ガス吸着法で測定した中心細孔直径が2nm以上、かつ比表面積が500m2/g以上、かつ細孔容積が0.6cm3/g以上である複数の細孔を有し、予め添加剤を吸着させた多孔体を液状有機化合物と接する面に設け、
前記多孔体が、メソポーラスシリカおよびケイ酸マグネシウムから選択される少なくとも1つであり、
前記添加剤が、ZnDTPであることを特徴とする捕捉対象成分の置換システム。 - 内燃機関用オイルに含まれるオイル劣化成分を捕捉して、オイル添加剤を放出するオイル劣化成分の置換システムであって、
窒素ガス吸着法で測定した中心細孔直径が2nm以上、かつ比表面積が500m2/g以上、かつ細孔容積が0.6cm3/g以上である複数の細孔を有し、予めオイル添加剤を吸着させた多孔体を内燃機関用オイルと接する面に設け、
前記多孔体が、メソポーラスシリカおよびケイ酸マグネシウムから選択される少なくとも1つであり、
前記オイル添加剤が、ZnDTPであることを特徴とするオイル劣化成分の置換システム。 - 内燃機関用オイルに含まれるオイル劣化成分を捕捉して、オイル添加剤を放出する内燃機関用オイルフィルタであって、
窒素ガス吸着法で測定した中心細孔直径が2nm以上、かつ比表面積が500m2/g以上、かつ細孔容積が0.6cm3/g以上である複数の細孔を有し、予めオイル添加剤を吸着させた多孔体を含むろ材を備え、
前記多孔体が、メソポーラスシリカおよびケイ酸マグネシウムから選択される少なくとも1つであり、
前記オイル添加剤が、ZnDTPであることを特徴とする内燃機関用オイルフィルタ。
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