DEVELOPMENT OF NOVEL SOLID SORBENTS FOR THERMAL SWING SORPTION AND DECOMPOSITION OF DILUTE NOX

稀氮氧化物热变吸附分解新型固体吸附剂的开发

• 批准号: 10555282
• 负责人: MACHIDA Masato
• 金额: $ 3.33万
• 依托单位: MIYAZAKI UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10555282/
• 关键词: NITROGEN OXIDES; ABSOROBENT; THERMAL SWING; METAL OXIDES; CATALYST; DECOMPOSITION; DENOX; SELECTIVE REDUCTION; 温度スウィング法; 還元; 気相固相反応

1. The NO sorption/desorption properties of substituted layered cuprates, LaィイD22-xィエD2SrィイD21+xィエD2CuィイD22ィエD2OィイD26ィエD2, have been studied to use them as an Nox storage material. The cumulative amount as well as the initial rate of NO uptake at 250℃ increased with Sr-substitution, x, giving rise to the maximum at x= 1.4, where a mixture of a orthorhombic layered cuprate and two binary oxides (SrィイD22ィエD2CuOィイD23ィエD2 and SrCuOィイD22ィエD2) was produced. The latter binary oxides should play a key role in promoting the oxidation of NO and thus solid-gas reactions with the layered cuprate phase, which is accompanied by the formation of nitrate and nitrite species. The absorbed NO was liberated reversibly when heated at 200-600℃. Sorption/desorption of NO could be cycled by employing temperature-swing operation.2. Sorption/desorption properties of Nox over ZrOィイD22ィエD2-based oxides are studied to use them as solid sorbents for NOx removal at low temperatures (<150℃), The impregnation of 1mol … More %PdO onto ZrOィイD22ィエD2 increased the NO uptake in the presence of OィイD22ィエD2 by promoting the oxidation of NO to NOィイD22ィエD2 and the subsequent formation of nitrate adsorbates. The reversible sorption/desorption cycles could be repeated even in the presence of COィイD22ィエD2 by applying temperature swing operation between 30 and 500℃.3. Interaction of NOィイD2xィエD2 with MnOィイD2xィエD2-CeOィイD22ィエD2 binary oxides are studied to use them for sorptive NOィイD2xィエD2 removal at low temperatures (<150℃), The formation of MnOィイD2xィエD2-CeOィイD22ィエD2 solid solutions with the fluorite-type structure at n≦0.5 was found to be quite effective in accelerating NOィイD2xィエD2. The cumulative NOィイD2xィエD2 uptake was increased by decreasing the reaction temperature and/or by increasing the OィイD22ィエD2 concentration, indicative of chemisorption via oxidation of NO/NOィイD22ィエD2. These adsorbates are produced by oxidative adsorption, which is caused by NO oxidation to NOィイD22ィエD2 by lattice oxygens bound to Mn and subsequent coordination to Ce in adjacent sites. Less

1。替换分层的蛋饼的无焊料/解吸特性，LAI D22-XIE D2SRI D21+XIE D2CU D22OIL D26 d26 d26 d26，将其用作NOX存储材料。 250时NO摄取的累积量和初始速率随着SR固定的增加而增加，在X = 1.4时产生了最大值，其中产生了正交层层状的蛋白酶和两个二元氧化物（SRCUOI D23 D2和SRCUOI D22 D2 D2）的混合物。后一种二元氧化物应在促进NO的氧化，从而与分层的铜相反应的氧化中起关键作用，这是通过硝酸盐和亚硝酸盐物质形成而实现的。当200-600℃加热时，吸收的NO被可逆地解放。可以通过使用温度旋转操作来循环吸附/解吸NO.2。 NOx对基于ZROII D22的氧化物的吸附/解吸特性是研究它们作为在低温下（<150℃）下清除NOx的固体吸附剂，1mol的1mol侵蚀…MORE％PDO在ZROII D2222的D2上脱离了基于ZROII D222的d222，在OOII d222的情况下，NO d222的存在增加了不吸收。硝酸盐吸附物。即使在存在COI D22的情况下，也可以通过在30到500。3.3之间进行温度摆动操作，即使在COI D22存在下，也可以重复可逆的吸附/解吸周期。 Interaction of NOI D2x with MnOI D2x with MnOI D2-CeOI D22 binary oxides are studiod to use them for sorptive NOI D2xx remove at low temperatures (<150℃), The formation of MnOI D2x with MnOI D2-CeOI D22 solid solutions with the fluorite-type structure at n≦0.5 was found to be quite effective in加速NOII D2XIE D2。通过降低反应温度和/或通过增加OII D22浓度来增加累积的NOII D2XIE D2摄取，这表明通过NO/NOII D22氧化化学吸收。这些吸附物是通过氧化吸附产生的，这是由与MN结合的晶格氧以及随后在相邻部位与CE的配位引起的。较少的

项目成果

M.Machida: "Temperature-Swing Sorption/Desorption Cycles of Nitric Oxide through Intercalation by Double Layered Cuprate" Applied Catalysis B,Environmental. 17巻・3号. 195-203 (1998)

M. Machida：“通过双层铜酸盐插层实现一氧化氮的温度摆动吸附/解吸循环”，《应用催化 B》，《环境》第 17 卷，第 3 期。195-203 (1998)

町田正人: "窒素酸化物固体吸収材料"エコインダストリー. 12巻・4号. 5-12 (1999)

Masato Machida：“氮氧化物固体吸附材料” Eco Industry Vol. 12, No. 4. 5-12 (1999)

M.Machida: "Absorption-Desorption Properties of Nitric Oxide over La_<2-x>Sr_<1+x>Cu_2O_6(0<x<2)" Journal of Materials Chemistry. 印刷中.

M. Machida：“La_<2-x>Sr_<1+x>Cu_2O_6(0<x<2) 上一氧化氮的吸收-解吸特性”，材料化学杂志正在出版。

M.Machida: "Catalysis-Specialist Periodical Report 15巻"The Royal Society Chemistry(印刷中).

M. Machida：“催化专家定期报告第 15 卷”英国皇家学会化学（正在出版）。

町田正人: "窒素酸化物固体吸収材料" エコインダストリー. 印刷中.

Masato Machida：“氮氧化物固体吸收材料”生态工业正在出版。