CN106187138A - 一种磁性的片状蜂窝陶瓷及其制备方法 - Google Patents
一种磁性的片状蜂窝陶瓷及其制备方法 Download PDFInfo
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- 239000000919 ceramic Substances 0.000 title claims abstract description 29
- 241000264877 Hippospongia communis Species 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 16
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 15
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 14
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 14
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052878 cordierite Inorganic materials 0.000 claims abstract description 12
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 9
- AYTAKQFHWFYBMA-UHFFFAOYSA-N chromium(IV) oxide Inorganic materials O=[Cr]=O AYTAKQFHWFYBMA-UHFFFAOYSA-N 0.000 claims abstract description 8
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 7
- 239000004927 clay Substances 0.000 claims abstract description 7
- 239000008367 deionised water Substances 0.000 claims abstract description 7
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 7
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000006260 foam Substances 0.000 claims abstract description 7
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims abstract description 7
- 239000001095 magnesium carbonate Substances 0.000 claims abstract description 7
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims abstract description 7
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 7
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 7
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 7
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 7
- 239000008117 stearic acid Substances 0.000 claims abstract description 7
- CVIBWHGVWHCIHZ-UHFFFAOYSA-N 1-[diacetyl(methyl)silyl]ethanone Chemical compound CC(=O)[Si](C)(C(C)=O)C(C)=O CVIBWHGVWHCIHZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 229910020647 Co-O Inorganic materials 0.000 claims description 14
- 229910020704 Co—O Inorganic materials 0.000 claims description 14
- 239000003054 catalyst Substances 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 9
- 239000002243 precursor Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 238000000498 ball milling Methods 0.000 claims description 3
- 238000001354 calcination Methods 0.000 claims description 3
- 229910052570 clay Inorganic materials 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000007670 refining Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- DHEQXMRUPNDRPG-UHFFFAOYSA-N strontium nitrate Inorganic materials [Sr+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O DHEQXMRUPNDRPG-UHFFFAOYSA-N 0.000 claims 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 5
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 238000003915 air pollution Methods 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
本发明公开了一种磁性的片状蜂窝陶瓷及其制备方法，由以下重量份原料制成：Fe3O4 5‑10，堇青石40‑50，黏土1‑3，ZrO2粉5‑10，泡沫镍4‑8，CrO2粉5‑10，滑石粉10‑15，碳酸镁3‑5，甲基三乙酰基硅烷5‑10，碳酸钠4‑8，硬脂酸1‑3，1 mol/L HNO3溶液适量，纳米氧化铝溶胶50‑60，1 mol/L La(NO3)3 1‑3，1 mol/L Sr(NO3)2 1‑2，1 mol/L Co(NO3)2 0.5‑1、1 mol/L柠檬酸2‑6，去离子水100‑200；本发明将蜂窝陶瓷载体制成片状型，方便安装和更换，同时节约成本，促进了资源的充分利用。
Description
技术领域
本发明涉及陶瓷材料，尤其涉及一种磁性的片状蜂窝陶瓷及其制备方法。
技术背景
机动车污染已成为我国空气污染的重要来源，是造成灰霾和光化学烟雾污染的重要原因。汽车尾气主要为氮氧化物(NOx)、碳氢化合物(HC)、一氧化碳(C0)、颗粒物等，已成为主要的大气污染物，因此，解决空气污染问题的重中之重即是解决汽车尾气污染问题。
汽车尾气净化器主要由壳体、载体和催化剂3部分组成，其中催化剂的选择非常重要。三效催化剂是指能同时去除NOx、HC、CO这三种主要污染物的催化剂，大量试验研究表明，稀土钙钛矿催化剂La-Sr-Co-O为三效催化剂，并且对汽车尾气的催化效果较好。祝杰在其硕士学位论文《堇青石蜂窝陶瓷负载La-Sr-Co-O对汽车尾气催化性能的研究》中采用堇青石蜂窝陶瓷作为载体，La-Sr-Co-O钙钛矿型复合氧化物作为催化剂活性成分，制备了整体式汽车尾气催化剂，但是其制备的陶瓷载体耐热性能还不够高，并且整体式催化剂一旦损坏需要整体更换，浪费资源的同时还增加了使用成本。
发明内容
针对以上不足，本发明的目的是提供一种耐高温、使用寿命长、又能保证资源合理利用的片状蜂窝陶瓷及其制备方法。
本发明所要解决的技术问题采用以下的技术方案来实现 ：
1. 一种磁性的片状蜂窝陶瓷及其制备方法，其特征在于，由以下重量份的原料制成：
Fe3O4 5-10，堇青石 40-50，黏土 1-3，ZrO2粉5-10，泡沫镍4-8，CrO2粉5-10，滑石粉10-15，碳酸镁3-5，甲基三乙酰基硅烷5-10，碳酸钠 4-8，硬脂酸1-3，1 mol/L HNO3溶液适量，纳米氧化铝溶胶50-60，1 mol/L La(NO3)3 1-3，1 mol/L Sr(NO3)2 1-2，1 mol/L Co(NO3)20.5-1、1 mol/L柠檬酸2-6，去离子水100-200；
所述纳米氧化铝溶胶的固含量为20%-25%。
2. 所述的一种磁性的片状蜂窝陶瓷及其制备方法，其特征在于，包括以下步骤：
a. 片状蜂窝陶瓷的制备:
取Fe3O4、堇青石、黏土、ZrO2 粉、泡沫镍、CrO2粉、滑石粉、碳酸镁和碳酸钠进行球磨、混料、粉碎至200 -500 目后，加入甲基三乙酰基硅烷、硬脂酸、50-60份去离子水混合均匀，陈腐 20-25 h得到泥料 ；将泥料放入真空炼泥机中进行炼泥后，再放入挤压成型机中成型后切割为3-5cm的板状试样 ；100-150℃下烘干试样后放入煅烧炉中，1200-1500℃下保温1-4h，冷却出炉。
b. 片状蜂窝陶瓷的预处理：
水洗步骤a得到的堇青石蜂窝陶瓷板状试样后，用HNO3溶液浸泡20-30 h，之后用清水超声10-30 min后干燥；
c. 纳米氧化铝溶胶和La-Sr-Co-O催化剂的涂覆：
将步骤b所得板状试样浸入纳米氧化铝溶胶和La-Sr-Co-O前驱体溶液的混合液中，20-60min后取出， 用洗耳球吹除板状试样孔道残留的混合液，50-100℃下干燥10-15h，500-1000℃下焙烧3-8h，重复3-5次。
3. 所述的La-Sr-Co-O前驱体溶液由所述的1 mol/L La(NO3)3，1 mol/L Sr(NO3)2，1 mol/L Co(NO3)2、1 mol/L柠檬酸溶液混合而成。
本发明的有益效果是：本发明利用耐高温、耐磨损和耐腐蚀的惰性无机材料ZrO2粉和CrO2粉来强化蜂窝陶瓷载体的综合性能，使蜂窝陶瓷载体具有抗压强度高、耐高温、化学稳定性好、抗腐蚀能力强等优点；进一步地，利用水溶性碳酸钠来提高陶瓷载体的孔隙率；将纳米氧化铝溶胶和La-Sr-Co-O前驱体溶液混合后对陶瓷载体进行浸泡，增加了La-Sr-Co-O催化剂与载体的结合力，延长其使用寿命；将蜂窝陶瓷载体制成片状型，方便了安装和更换，同时节约成本，促进了资源的充分利用，符合当下绿色环保的趋势，具有更广阔的应用前景和市场价值；配合添加的Fe3O4使材料具有磁性，扩展了其应用范围。
具体实施方式
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解，下面结合具体实施例，进一步阐述本发明。
实施例
一种磁性的片状蜂窝陶瓷及其制备方法，其特征在于，由以下重量份的原料制成：
Fe3O4 10，堇青石50，黏土3，ZrO2粉10，泡沫镍8，CrO2粉10，滑石粉10，碳酸镁3，甲基三乙酰基硅烷10，碳酸钠8，硬脂酸3，1 mol/L HNO3溶液适量，纳米氧化铝溶胶60，1 mol/L La(NO3)3 3，1 mol/L Sr(NO3)2 2，1 mol/L Co(NO3)21、1 mol/L柠檬酸6，去离子水200；
所述纳米氧化铝溶胶的固含量为20%-25%。
所述的一种磁性的片状蜂窝陶瓷及其制备方法，其特征在于，包括以下步骤：
a. 片状蜂窝陶瓷的制备:
取Fe3O4、堇青石、黏土、ZrO2 粉、泡沫镍、CrO2粉、滑石粉、碳酸镁和碳酸钠进行球磨、混料、粉碎至200 -500 目后，加入甲基三乙酰基硅烷、硬脂酸、50-60份去离子水混合均匀，陈腐 20-25 h得到泥料 ；将泥料放入真空炼泥机中进行炼泥后，再放入挤压成型机中成型后切割为3-5cm的板状试样 ；100-150℃下烘干试样后放入煅烧炉中，1200-1500℃下保温1-4h，冷却出炉。
b. 片状蜂窝陶瓷的预处理：
水洗步骤a得到的堇青石蜂窝陶瓷板状试样后，用HNO3溶液浸泡20-30 h，之后用清水超声10-30 min后干燥；
c. 纳米氧化铝溶胶和La-Sr-Co-O催化剂的涂覆：
将步骤b所得板状试样浸入纳米氧化铝溶胶和La-Sr-Co-O前驱体溶液的混合液中，20-60min后取出， 用洗耳球吹除板状试样孔道残留的混合液，50-100℃下干燥10-15h，500-1000℃下焙烧3-8h，重复3-5次。
所述的La-Sr-Co-O前驱体溶液由所述的1 mol/L La(NO3)3，1 mol/L Sr(NO3)2，1mol/L Co(NO3)2、1 mol/L柠檬酸溶液混合而成。
经检测：
对CO催化效率 ≥90%。
Claims (3)
1.一种磁性的片状蜂窝陶瓷及其制备方法，其特征在于，由以下重量份的原料制成：
Fe3O4 5-10，堇青石 40-50，黏土 1-3，ZrO2粉5-10，泡沫镍4-8，CrO2粉5-10，滑石粉10-15，碳酸镁3-5，甲基三乙酰基硅烷5-10，碳酸钠 4-8，硬脂酸1-3，1 mol/L HNO3溶液适量，纳米氧化铝溶胶50-60，1 mol/L La(NO3)3 1-3，1 mol/L Sr(NO3)2 1-2，1 mol/L Co(NO3)20.5-1、1 mol/L柠檬酸2-6，去离子水100-200；
所述纳米氧化铝溶胶的固含量为20%-25%。
2.根据权利要求1所述的一种磁性的片状蜂窝陶瓷及其制备方法，其特征在于，包括以下步骤：
a. 片状蜂窝陶瓷的制备:
取Fe3O4、堇青石、黏土、ZrO2 粉、泡沫镍、CrO2粉、滑石粉、碳酸镁和碳酸钠进行球磨、混料、粉碎至200 -500 目后，加入甲基三乙酰基硅烷、硬脂酸、50-60份去离子水混合均匀，陈腐 20-25 h得到泥料 ；将泥料放入真空炼泥机中进行炼泥后，再放入挤压成型机中成型后切割为3-5cm的板状试样 ；100-150℃下烘干试样后放入煅烧炉中，1200-1500℃下保温1-4h，冷却出炉；
b. 片状蜂窝陶瓷的预处理：
水洗步骤a得到的堇青石蜂窝陶瓷板状试样后，用HNO3溶液浸泡20-30 h，之后用清水超声10-30 min后干燥；
c. 纳米氧化铝溶胶和La-Sr-Co-O催化剂的涂覆：
将步骤b所得板状试样浸入纳米氧化铝溶胶和La-Sr-Co-O前驱体溶液的混合液中，20-60min后取出， 用洗耳球吹除板状试样孔道残留的混合液，50-100℃下干燥10-15h，500-1000℃下焙烧3-8h，重复3-5次。
3.根据权利要求2所述的La-Sr-Co-O前驱体溶液由所述的1 mol/L La(NO3)3，1 mol/LSr(NO3)2，1 mol/L Co(NO3)2、1 mol/L柠檬酸溶液混合而成。
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