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Jin, Hailian,Bismillah Ansari, Mohd,Park, Sang-Eon Royal Society of Chemistry 2011 Chemical communications Vol.47 No.26
<P>Mesoporous MFI zeolites (ZSM-5, TS-1, S-1) having intracrystalline mesoporosity within zeolite crystals were synthesized by microwave induced assembly through the ionic interaction between the sulfonic acid functionalized MFI zeolite nanoparticles and alkyltrimethylammonium cationic surfactants.</P> <P>Graphic Abstract</P><P>Mesoporous MFI zeolites having intracrystalline mesoporosity within zeolite crystals were synthesized by microwave induced assembly through the ionic interaction between the sulfonic acid functionalized MFI zeolite nanoparticles and alkyltrimethylammonium cationic surfactants. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c1cc12259b'> </P>
MgO encapsulated mesoporous zeolite for the side chain alkylation of toluene with methanol.
Jiang, Nanzhe,Jin, Hailian,Jeong, Eun-Young,Park, Sang-Eon American Scientific Publishers 2010 Journal of nanoscience and nanotechnology Vol.10 No.1
<P>Side chain alkylation of toluene with methanol was studied over mesoporous zeolite supported MgO catalysts. MgO were supported onto the carbon templated mesoporous silicalite-1 by direct synthesis route under microwave conditions. This direct synthesis route yields the majority of MgO highly dispersed into the mesopores of the silicalite-1 crystals. The vapor phase alkylation of toluene with methanol was performed over these catalysts under vapor phase conditions at atmospheric pressure. Mesoporous silicalite-1 supported MgO catalysts gave improved yields towards side chain alkylated products compared to the bulk MgO. The higher activity exhibited by 5% MgO supported on mesoporous silicalite compared to the one with 1% MgO can be attributed to the large number of weak basic sites observed from the CO2 TPD.</P>
오한슬 ( Hanseul Oh ),김시윤 ( C-yoon Kim ),한주희 ( Ju-hee Han ),김진 ( Jin Kim ),이은혜 ( Eunhye Lee ),전혜련 ( Hailian Quan ),석승혁 ( Seung Hyeok Seok ),정초록 ( Cho-rok Jung ),박재학 ( Jae-hak Park ) 한국동물실험대체법학회 2016 동물실험대체법학회지 Vol.10 No.1
The global cosmetic market in 2014 was estimated to be worth to about 250 billion USD and has continued to grow. In particular, stem-cell based cosmetics, which can be used to repair skin and protect it from aging, have become recently trendy. However, the questionable safety issue of commercial stem-cell cosmetics has become a hot issue. Cosmetics consumers may buy a product without any information about the safety of products whose ingredients may have less than 10 years of commercial history. For the safety verification of cosmetics and ingredients, the classification for eye irritation needs to be conducted essentially. The Bovine Corneal Opacity & Permeability test (BCOP) is recommended as a validated alternative method for eye irritation by the Organization for Economic Co-operation and Development (OECD). Thus, in this study, we evaluated the eye irritation potential of commercial stem-cell based cosmetics by the BCOP assay, Hens Egg Test on the Chorio-Allantoic Membrane (HET-CAM) assay, and Human Umbilical Vein Endothelial cell (HUVEC) test. Our results showed that all 8 test substances were not classified as eye irritants which could cause serious eye damage according to the BCOP assay associated with histopathology and the HET-CAM assay. But four test substances showed to be mild irritants in the HUVEC test. To the best of our knowledge, our results are the first reported data about the classification of the potential eye irritation of stem-cell based cosmetics, and demonstrate that the validated BCOP assay combined with other alternative tests such as the HET-CAM assay and the HUVEC test, may be able to indicate mild to serious eye irritants.
Jo, Hyuna,Lee, Woo Ram,Kim, Nam Woo,Jung, Hyun,Lim, Kwang Soo,Kim, Jeong Eun,Kang, Dong Won,Lee, Hanyeong,Hiremath, Vishwanath,Seo, Jeong Gil,Jin, Hailian,Moon, Dohyun,Han, Sang Soo,Hong, Chang Seop WILEY-VCH 2017 CHEM SUS CHEM Vol.10 No.3
<P>A combined sonication and microwave irradiation procedure provides the most effective functionalization of ethylenediamine (en) and branched primary diamines of 1-methylethylenediamine (men) and 1,1-dimethylethylenediamine (den) onto the open metal sites of Mg-2(dobpdc) (1). The CO2 capacities of the advanced adsorbents 1-en and 1-men under simulated flue gas conditions are 19 wt% and 17.4 wt%, respectively, which are the highest values reported among amine-functionalized metal-organic frameworks (MOFs) to date. Moreover, 1-den exhibits both a significant working capacity (12.2 wt%) and superb CO2 uptake (11 wt%) at 3% CO2. Additionally, this framework showcases the superior recyclability; ultrahigh stability after exposure to O-2, moisture, and SO2; and exceptional CO2 adsorption capacity under humid conditions, which are unprecedented among MOFs. We also elucidate that the performance of CO2 adsorption can be controlled by the structure of the diamine ligands grafted such as the number of amine end groups or the presence of side groups, which provides the first systematic and comprehensive demonstration of finetuning of CO2 uptake capability using different amines.</P>