搜索结果: 1-15 共查到“知识库 理学 SO2”相关记录104条 . 查询时间(0.155 秒)
以污水厂二次污泥为主要原料，掺杂不同量的废旧Ｚｎ⁃Ｃ电池电极材料，采用ＺｎＣｌ２活化法制备出废旧Ｚｎ⁃Ｃ电池⁃活性污泥炭，表征分析
污泥炭样品的碘吸附值、ＢＥＴ、ＦＴ⁃ＩＲ、ＳＥＭ⁃ＥＤＳ和ＸＲＤ，并进行了低浓度ＳＯ２气体动态吸附试验．试验结果表明，污泥与电池粉末质量比为３∶１
时，污泥炭的碘吸附值和比表面积分别达到７５０．６ｍｇ·ｇ...
SCR脱硝过程中SO2催化氧化的原位红外研究
V2O5-WO3/TiO2, 脱硝 SO2催化氧化
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2015/12/23
采用工业用V2O5-WO3/TiO2催化剂,基于傅里叶原位红外光谱(FT-IR)技术考察SO2的氧化过程及烟气组分对SO2氧化行为的影响;结果表明,SO2在催化剂表面氧化主要是首先吸附在催化剂表面V2O5活性位上,占据其O原子,以SO2-3形式存在,后与催化剂表面V5+-OH发生反应,生成金属硫酸盐(VOSO4)中间产物,O2重新氧化催化氧化过程中由于被SO2夺取O原子而被还原的V2O5物种,使V...
Vulcamera: a program for measuring volcanic SO2 using UV cameras
Ultraviolet camera volcanic sulfur dioxide image acquisition
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2015/8/27
We report here on Vulcamera, a stand-alone program for the determination of volcanic SO2 fluxes using ultraviolet cameras. The code enables field image acquisition and all the required post-processin...
Recent advances in ground-based ultraviolet remote sensing of volcanic SO2 fluxes
Volcanology Volcanic Gases Volcano monitoring Volcanic effects upon atmosphere Atmospheric instruments and techniques
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2015/8/27
Measurements of volcanic SO2 emission rates have been the mainstay of remote-sensing volcanic gas geochemistry for almost four decades, and they have contributed significantly to our understanding of ...
Continuous SO2 flux measurements for Vulcano Island,Italy
SO2 Differential optical absorption spectroscopy Vulcano Island Network for Observation of Volcanic and Atmospheric Change
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2015/8/24
The La Fossa cone of Vulcano Island (Aeolian Archipelago, Italy) is a closed conduit volcano. Today, Vulcano Island is characterized by sulfataric activity, with a large fumarolic field that is mainly...
SO2和BAaP复合暴露诱导小鼠心脏线粒体损伤的分子机制初探
细胞色素C氧化酶 合酶
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2015/8/10
采用 Ｃ５７ＢＬ６ 小鼠作为模型，ＳＯ２（７ ｍｇ·ｍ
－３
）动式吸入染毒 ２８ ｄ，每天染毒 ６ ｈ；ＳＯ２吸入染毒开始后的第 １～５ ｄ，每天在 ＳＯ２吸入染毒结束
后对小鼠进行腹腔注射 ＢａＰ（４０ ｍｇ·ｋｇ
－１
（ｂ．ｗ．）），１ ｄ 注射 １ 次．吸入染毒结束后，采用荧光定量 ＰＣＲ 技术检测小鼠心肌细胞中由核 ＤＮＡ
（ｎＤＮＡ）编码的细胞色素 Ｃ 氧化酶亚基 ＣＯ４...
BrO/SO2 molar ratios from scanning DOAS measurements in the NOVAC network
BrO/SO2 molar ratios scanning DOAS measurements NOVAC network
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2015/1/6
The molar ratio of BrO to SO2 is, like other halogen/sulfur ratios, a possible precursor for dynamic changes in the shallow part of a volcanic system. While the predictive significance of the BrO/SO2 ...
Inclusion of ash and SO2 emissions from volcanic eruptions in WRF-Chem: development and some applications
ash SO2 emissions volcanic eruptions WRF-Chem development some applications
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2014/12/16
We describe a new functionality within the Weather Research and Forecasting (WRF) model with coupled Chemistry (WRF-Chem) that allows simulating emission, transport, dispersion, transformation and sed...
Volcanic SO2 by UV-TIR satellite retrievals:validation by using ground-based network at Mt. Etna
Volcanic SO2 UV-TIR satellite retrievals:validation ground-based network Mt. Etna
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2015/8/18
Mt. Etna volcano in Italy is one of the most active degassing volcanoes worldwide, emitting a mean of 1.7 Mt/year of Sulphur Dioxide (SO2) in quiescent periods. In this work, SO2 measurements retrieve...
Intercomparison of Metop-A SO2 measure- ments during the 2010- 2011 Icelandic eruptions
Metop-A Sulphur Dioxide Volcano GOME-2 IASI Brewer
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2015/8/18
The European Space Agency project Satellite Monitoring of Ash and Sulphur Dioxide for the mitigation of Avi- ation Hazards, was introduced after the eruption of the Icelandic volcano Eyjafjallajö...
Volcanic Ash and SO2 retrievals using synthetic MODIS TIR data:comparison between inversion procedures and sensitivity analysis
Volcanic Ash SO2 retrievals synthetic MODIS TIR data
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2015/8/18
In this work the volcanic ash and SO2 retrievals obtained by applying three different procedures (LUT - Look Up Table, NN - Neural Network and VPR - Volcanic Plume Removal) on MODIS Thermal InfraRed (...
采用卧式程序控温电加热陶瓷管反应器，在N2和模拟烟气气氛中、300~1 100 ℃下，研究了SO2对甲烷在金属铁及其氧化物表面还原NO反应的影响。采用XRD等手段对反应前后铁催化剂样品的组成变化进行了表征，分析了SO2在甲烷-铁脱硝反应中的作用机理。结果表明，甲烷在金属铁及氧化铁表面能够高效率地还原NO，NO还原效率不受烟气中SO2的影响。在SO2体积分数为0.01%~0.04%的N2气氛中，温度...
采用浸渍法制备了以REY为载体负载金属氧化物催化剂。采用XRD、NH3-TPD、NO-TPD、H2-TPR和XPS对催化剂进行表征,并在固定床微型反应器上评价SO2存在条件下催化剂在NH3选择还原NO反应中的活性。实验结果表明,活性组分种类及负载量均影响催化剂性能,Cu(3)/REY催化剂在NH3选择还原NO反应中表现出较好的低温活性,在SO2存在条件下,254~390℃时NO的转化率大于95%。...
在循环煅烧/碳酸化反应系统中,研究了SO2对钙基吸收剂CaCO3捕集CO2的影响,获得了SO2对钙基吸收剂碳酸化特性、煅烧特性以及循环稳定性的影响规律,并结合SEM分析结果,从循环煅烧/碳酸化反应角度,分析了可能存在的原因。结果表明,钙基吸收剂吸收CO2的能力随着循环反应次数的增加逐渐发生衰减,在SO2影响下,这种衰减会进一步加剧,且衰减程度随着SO2浓度的增加而增大,经过十次循环后,碳酸化转化率...
CoOx-CeOx/ZrO2催化氧化NO性能及抗SO2毒化研究
CoOx-CeOx/ZrO2催化剂 催化氧化NO 抗SO2
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2014/4/29
采用浸渍法制备了一系列CoOx-CeOx/ZrO2催化剂,探讨了催化剂载体、Co含量、Co/Ce配比等对Co基催化剂催化氧化NO活性的影响及其机理。ZrO2负载的Co氧化物具有优良的低温NO催化氧化活性,铈的添加进一步提高了催化剂的低温活性。其促进机制主要是提高了催化剂吸附氧的能力及改善了Co在催化剂表面的分散。同时,掺杂铈使得催化剂抗SO2能力有一定增强,呈现出选择性毒化机制。