China Particuology最新文献_第8页

Magnetic field assisted fluidization—Dimensional analysis addressing the physical basis 磁场辅助流化的量纲分析

China Particuology Pub Date : 2007-02-01 DOI: 10.1016/j.cpart.2007.03.002

Jordan Hristov

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引用次数: 28

Magnetically stabilized bed reactor for selective hydrogenation of olefins in reformate with amorphous nickel alloy catalyst 非晶镍合金催化重整油中烯烃选择性加氢的磁稳定床反应器

China Particuology Pub Date : 2007-02-01 DOI: 10.1016/j.cpart.2007.01.006

Xuhong Mu, Enze Min

引用次数: 10

Comparison of schemes for preparing magnetic Fe3O4 nanoparticles 磁性Fe3O4纳米颗粒制备方案的比较

China Particuology Pub Date : 2007-02-01 DOI: 10.1016/j.cpart.2007.01.011

Ruoyu Hong , Jianhua Li , Jian Wang , Hongzhong Li

{"title":"Comparison of schemes for preparing magnetic Fe3O4 nanoparticles","authors":"Ruoyu Hong , Jianhua Li , Jian Wang , Hongzhong Li","doi":"10.1016/j.cpart.2007.01.011","DOIUrl":"10.1016/j.cpart.2007.01.011","url":null,"abstract":"<div>Magnetic Fe3O4 nanoparticles were prepared by means of coprecipitation using NH3·H2O in water and in alcohol, and using NaOH in water. A series of instruments such as SEM, TEM, HRTEM, FT-IR, XRD and VSM were used to characterize the properties of the magnetic nanoparticles. The results indicated that the magnetism of Fe3O4 nanoparticles synthesized using NH3·H2O in water was the highest, although the reaction time was the longest. The process using NaOH in water was the simplest and the reaction time was the shortest, but the particle characteristics were inferior to those of the other two methods. The mean size of magnetic Fe3O4 nanoparticles prepared by coprecipitation in alcohol was the smallest among the three, but the nanoparticles aggregated severely. The magnetic Fe3O4 nanoparticles were coated with oleic acid using saturated sodium oleate, and the polarity of the surface-modified nanoparticles was measured. Fe3O4 nanoparticles prepared using NH3·H2O, not NaOH, could be coated successfully and thoroughly.</div>","PeriodicalId":100239,"journal":{"name":"China Particuology","volume":"5 1","pages":"Pages 186-191"},"PeriodicalIF":0.0,"publicationDate":"2007-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.cpart.2007.01.011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86286941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 49

L–S mass transfer in G–L–S countercurrent magnetically stabilized bed with amorphous alloy SRNA-4 catalyst 非晶合金SRNA-4催化剂在G-L-S逆流磁稳定床中的传质研究

China Particuology Pub Date : 2007-02-01 DOI: 10.1016/j.cpart.2007.01.009

Wei Li , Baoning Zong , Xiaofang Li , Xiangkun Meng , Jinli Zhang

引用次数: 9

Eighth China Aerosol Conference cum Second Cross-Strait Aerosol Technology Conference, Nanjing, November 3–8, 2005 第八届中国气溶胶会议暨第二届海峡两岸气溶胶技术会议，南京，2005年11月3-8日

China Particuology Pub Date : 2006-12-01 DOI: 10.1016/S1672-2515(07)60290-5

Renjian Zhang

引用次数: 0

Source profiles and fingerprints of fine and coarse sands resuspended from soils sampled in central inner mongolia 内蒙古中部土壤重悬细砂和粗砂的源剖面和指纹图谱

China Particuology Pub Date : 2006-12-01 DOI: 10.1016/S1672-2515(07)60280-2

Chung-Shin Yuan , Chun-Xing Hai , Ming Zhao

{"title":"Source profiles and fingerprints of fine and coarse sands resuspended from soils sampled in central inner mongolia","authors":"Chung-Shin Yuan , Chun-Xing Hai , Ming Zhao","doi":"10.1016/S1672-2515(07)60280-2","DOIUrl":"10.1016/S1672-2515(07)60280-2","url":null,"abstract":"<div>Fingerprints and source profiles of fine and coarse sands that originate from Central Inner Mongolia during Asian continental sandstorms (ACS) can be used to identify the origin of Asian sands and to trace them as they travel downwind. Soil samples collected at various land surfaces in Central Inner Mongolia were resuspended using a dry powder atomizer in an enclosure chamber. The resuspended sands were then sampled by two dichotomous samplers situated at the bottom of the enclosure chamber for fine (PM2.5) and coarse (PM2.5-10) sands, respectively. The chemical composition of sands, including water-soluble ionic species, metallic contents, and carbonaceous contents, were further analyzed. Results from resuspension tests indicated that the soils contained considerably more coarse particles than fine. Moreover, Mg, K, Al, and Fe in coarse sand had strong correlations with each other. The ratio of Mg, K, Fe (or Al) to Al (or Fe) and OC/EC in the coarse sands can be used as the fingerprints of Asian sands originating from Central Inner Mongolia.</div>","PeriodicalId":100239,"journal":{"name":"China Particuology","volume":"4 6","pages":"Pages 304-311"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1672-2515(07)60280-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85704123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17

Seasonal and diurnal variations of PM1.0, PM2.5 and PM10 in the roadside environment of hong kong 香港路边环境PM1.0、PM2.5及PM10的季节及日变化

China Particuology Pub Date : 2006-12-01 DOI: 10.1016/S1672-2515(07)60281-4

Y. Cheng, K.F. Ho, S.C. Lee, S.W. Law

{"title":"Seasonal and diurnal variations of PM1.0, PM2.5 and PM10 in the roadside environment of hong kong","authors":"Y. Cheng, K.F. Ho, S.C. Lee, S.W. Law","doi":"10.1016/S1672-2515(07)60281-4","DOIUrl":"10.1016/S1672-2515(07)60281-4","url":null,"abstract":"<div>PM1.0 (fine particles, with diameter < 1 μm), PM2.5 (fine particles, with diameter < 2.5 μm) and PM10 (coarse particles, with diameter < 10 μm) were measured at 24-hour intervals near a high-traffic road in Hong Kong, from October 2004 to September 2005. Mass concentrations were determined for the three particle fractions, averaging for PM1.0, PM2.5 and PM10, respectively, 44.5±18.4, 55.4±25.5 and 81.3±37.7 μg·m−3. PM2.5 was 3.7 times the U.S. EPA's annual NAAQS of 15 μg·m−3. Overall, PM1.0 accounted for 44 to 69% (average 57%) of PM10, while PM2.5 accounted for 58 to 82% (average 71%) in this study. The particulate masses showed obvious seasonal patterns with high concentrations in cold seasons and low in warm seasons, especially high concentrations of PM2.5-10 during the cold seasons. Diurnal variations of mass concentrations of PM2.5 were determined during July, showing two major peaks in the morning and afternoon rush hours.</div>","PeriodicalId":100239,"journal":{"name":"China Particuology","volume":"4 6","pages":"Pages 312-315"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1672-2515(07)60281-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83814639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 47

Comparison of simulating mineral dust aerosols in east asia by two emission schemes 两种排放方案模拟东亚矿物粉尘气溶胶的比较

China Particuology Pub Date : 2006-12-01 DOI: 10.1016/S1672-2515(07)60278-4

Jian Wu , Yanyan Xu , Congbin Fu , Renjian Zhang , Min Dai , Yong Zhu

引用次数: 12

Relative levels of indoor and outdoor particle number concentrations in a residential building in Xi'an 西安市某居民楼室内外颗粒物数量浓度相对水平

China Particuology Pub Date : 2006-12-01 DOI: 10.1016/S1672-2515(07)60287-5

Yan-ming Kang, K. Zhong, Shuncheng Lee

引用次数: 4

Relative levels of indoor and outdoor particle number concentrations in a residential building in Xi'an 西安市某居民楼室内外颗粒物数量浓度相对水平

China Particuology Pub Date : 2006-12-01 DOI: 10.1016/S1672-2515(07)60287-5

Yanming Kang , Ke Zhong , Shun-Cheng Lee

引用次数: 4