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        고체산 촉매에서의 1- 펜텐의 골격이성화반응

        홍성수,우희철,이근대 ( Seong Soo Hong,Hee Chul Woo,Gun Dae Lee ) 한국공업화학회 1996 공업화학 Vol.7 No.5

        여러 가지의 고체산 촉매에 의한 1-펜텐의 골격이성화 반응에서 반응활성, 선택도, 반응메카니즘 및 촉매의 산의 세기와 촉매활성과의 관계를 연구하였다. 여러 가지의 고체산 촉매중에서 천연제올라이트가 가장 높은 활성을 보여주었고, 불소나 황산으로 처리된 η-알루미나는 변형되지 않은 경우에 비해 활성이 크게 증가하였다. 한편 반응온도가 증가할 수록 이소펜텐의 수율이 증가하였고, 접촉시간의 증가에 따라 이소펜텐의 수율이 증가하였다. 그러나 높은 반응온도와 아주 긴 접촉시간에서는 크래킹 반응의 생성물이 증가하였다. 금속이온으로 치환된 천연제올라이트에서의 활성은 감소하였고, 이것은 금속이온의 polarizing power와 관계가 있는 것으로 나타났다. 암모니아 승온탈착실험 결과에 의하면 촉매의 활성은 촉매의 산의 세기와 밀접한 관계가 있는 것으로 나타났다. In the skeletal isomerization of 1-pentene over various solid acid catalysts, we have studied catalytic reactivity, selectivity, reaction mechanism and the relation between acid strength of catalysts and catalytic activity. Natural zeolite shows highest activity among the all catalysts and the modified η-alumina with fluorine and sulfuric acid shows higher activity than unmodified η-alumina. The yield of isopentene increases with increasing temperature and increasing contact time. However the cracking products increase at the high temperature and very high contact time. In addition, the activity of natural zeolite exchanged with metal cation decreases and shows good relation with the polarizing power of metal cation. According to the result of ammonia TPD, the acid strength of catalysts has an effect on catalytic activity.

      • 제품조형과 인터페이스 디자인에 관한 연구

        홍성수 中央大學校 韓國藝術硏究所 1999 中央大學校 藝術大學 創論 Vol.18 No.-

        The hike of appliance development since 1950s has driven the ever extremed variety of design styles. Every style co-exists under the name of functional modernism, post modernim and ecological design in fashion or in trend. In this circumstance, designers are desperately searching the essentials in design objectives, processes and methods, because 'the best selection in the widest varieties' is still unchanged motto in design and marketing efforts. If we draw design activity to shape the product styles in more specific, we could list the intuitive and experimental approaches in one hand and the quantitative and rational in other side. The value of 'Sensitivity' in product form is derived from the realm of 'meaning' which is more metaphysical and a broad sense. The contents of meaning come from searching the metaphysical image, the ecological type and the aesthetical style of product forms. While, the importance of Use-Interface design has been increasingly recognized as product changed into intelligent tool which emphasizes on cognitive aspects rather than physiological aspects. However, researches on user-interface design in Industrial Design is still on beginning stage, which requires clear understanding and the development of relevant methodologies for it's practical application for designing products. This study aims to establish the conceptual frame work of user-interface design through analyzing various theories and issues on user-interface design. At first, the backgrounds of the development of user-interface design are discussed and user-interface design is defined. It is followed by surverying the general models of user-interface design process. Based on such context, this study is accomplished with the generation of form concepts and elements related to sensitivity and also the development of a new method for approaching to the value of sensitivity and meaning in design morphology.

      • 五酸化바나듐 觸媒의 構造 및 觸媒作用에 關한 硏究

        洪性秀 釜山工業大學校 1984 論文集 Vol.26 No.-

        Catalytic action of vanadium pentoxide and promotive action of bismuth trioxide on vanadium pentoxide for oxidation reactions were investigated from structural point of view. Importance of V=0 bond in vanadium pentoxide catalyst was emphasized on basis of Infrared absorption. The follow results were obtained; 1) Vanadium pentoxide showed an infrared spectrum with sharp absorption peak at 10-30cm??. It was confirmed that this peak is due to stretching-vibration of V=0 bond of vanadium pentoxide. It was thought that V=0 bond of vanadium pentoxide acts as active center. 2) It was confirmed that bismuth trioxide enhanced the activity of vanadium pentoxide catalyst.

      • 아파트용 조명기기 디자인에 관한 연구

        홍성수 중앙대학교 예술연구소 1997 中央大學校 藝術大學 創論 Vol.16 No.-

        Recently many people are interested about interior design because of the rapidly increase apartment. Especially to make good image of interior in apartment, lighting is very important. So many designers are doing research about lighting design now. Therefore, purpose of my study is how it make good harmony in the interior of apartment. New my lighting design will be established at the bedroom, livingroom, diningroom, emergence place, etc... I considered psychological comfort and safety, environmental engineering aspect, space analyze in interior rather than functional aspect to develope new lighting design. Corporate product identification (CPI) is important in design. So, I tried to develope lighting to fit in the area of any place such as bedroom, livingroom, diningroom, emergence place, etc.. For my study, I researched about domestic and abroad lighting design. Through this research, I processed my project like a following step design concept, idea sketch, rendering, mock up to fit interior of any apartment.

      • FTTH를 위한 협대역 스펙트럼 필터의 설계

        홍성수,조미남,김사웅,박수봉 東新大學校 2003 論文集 Vol.13 No.-

        In this paper, harmonic expansion method(HEM) for analyze optical components which are necessary before the fabrication of optical circuit component and as its applications, using narrow-band spectral filter are studied. Also a narrow-band spectral filter constructed with a W-index optical waveguide is proposed and analyzed. The proposed filter offers a spectral width on the order of one nanometer, considerably narrower than that provided by a filter made of two step-index optical waveguides having the same transmission wavelength. The narrow spectral width is achieved by exploiting a relatively large slope difference between the dispersion characteristics of the W-index and step-index waveguides constituting the filter. The transmission characteristic of the proposed filter with peak transmission at 1550nm is calculated and compared with that of a corresponding filter made of two step-index waveguide filters.

      • 2007년도 사료산업 여건변화에 따른 대응방안 모색

        홍성수,Hong, Seong-Su 한국사료협회 2007 飼料 Vol.6 No.1

        본 협회는 지난해 11월 21일 협회 대회의실에서 "2007년도 사료산업 여건변화에 따른 대응방안 모색"을 주제로 2006 정기세미나를 개최하였다. 참석대상은 회원사 대표 및 실무자로서 90여명이 참석, 장소가 다소 협소함에도 성황리에 세미나를 마칠 수 있었으며 참석자에 대한 설문조사 결과 주제의 시의성과 아울러 주제항목의 다양성에 대한 호평이 이어졌다. 이에 본지에서는 세미나에서 발표된 내용을 요약하여 독자들의 이해를 돕고자 한다.

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