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중년층의 주거만족도가 행복감에 미치는 영향 : 사회관계만족도와 자기효능감의 매개효과를 중심으로
권송이(Kwon, Song-Yi) 한국도시부동산학회(구.도시정책학회) 2021 도시부동산연구 Vol.12 No.3
This study explores how residential satisfaction among middle-aged people living in the metropolitan area affects happiness. Existing studies have considered residential satisfaction as one of the determinants of happiness and found that residential satisfaction has a positive impact on happiness. Our residential environment may affect happiness in itself, but it may also affect happiness through social relationships occurring in the living place and our belief that we live as members of society. Thus we need to consider the mediating effects of social satisfaction and self-efficacy when analyzing the relationship between residential satisfaction and happiness. This study verified a model of happiness based on the human-environmental fit model and the exchange theory. The analysis results are as follows. First, social relationship satisfaction and self-efficacy is fully mediated between residential environmental satisfaction and happiness. Second, housing satisfaction directly affected happiness without the mediating effect of social satisfaction or self-efficacy. To increase happiness, we need to improve housing conditions and the residential environment and actively consider making it a place where social relations can take place.
공업화학(전기화학, 분석화학 포함) 촉매/반응공학 수열 합성법과 마이크로파 가열법으로 제조한 TS-1 촉매에 의한 페놀 수산화 반응: 용매의 영향
권송이 ( Song Yi Kwon ),윤성훈 ( Song Hun Yoon ),이종민 ( Jong Min Lee ),장종산 ( Jong San Chang ),이철위 ( Chul Wee Lee ) 한국화학공학회 2011 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.49 No.2
Catalytic activity such as conversion and selectivity on the phenol hydroxylation over TS-1 prepared by hydrothermal method and microwave heating method, respectively, was compared and discussed for understanding the dependence of solvent such as water, methanol, acetone, respectively, during phenol hydroxylation, with hydrogen peroxide. Basic physical properties such as XRD, EDS, SEM and N2 adsorption-desorption were determined and compared. The relationship between catalytic activity and physical properties of TS-1 was explained.
페놀의 수산화 반응에 사용한 TS-1 촉매의 효과적인 재생 방법(소성 온도 의존성)
권송이 ( Song Yi Kwon ),윤성훈 ( Song Hun Yoon ),엄경섭 ( Kyung Sub Um ),이재욱 ( Jae Wook Lee ),이철위 ( Chul Wee Lee ) 한국화학공학회 2010 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.48 No.6
본 연구에서는 과산화수소수에 의한 페놀의 수산화 반응에서 사용한 TS-1 촉매를 효과적으로 재사용할 때, 소성 온도가 촉매의 특성에 미치는 영향에 대해서 연구하였다. TS-1 촉매를 5회 재생시켜 반복 사용하였는데, 매회 마다 550˚C 및 700˚C에서 각각 소성하였다. Fresh한 촉매의 페놀 전환율은 22.9%이었는데, 550˚C에서 소성한 촉매에서는 5회 재생하였을 때 15.1%로 감소하였고, 700˚C에서 소성한 촉매는 5회 재생하였을 때 18.8%로 감소하였다. 그리고 카테콜/하이드로퀴논의 생성비가 550˚C에서 5회 재생 후에는 1.45, 700˚C에서 5회 재생 후에는 1.2가 되었다. 소성 온도에 따른 재생 전·후 촉매에 대한 XRD, UV-vis spectra, N2 흡착/탈착 시험, TGA 등과 같은 특성 분석 및 촉매 성능(페놀 전환율 및 생성물의 선택도)을 비교함으로써 촉매의 비활성화 원인을 예측하였다. In this study, calcination temperature dependence of TS-1 catalyst was investigated in the hydroxylation of phenol with hydrogen peroxide during the regeneration of catalyst. Catalyst was regenerated 5 times by calcining at 550˚C and 700˚C, respectively. When the catalyst was regenerated at 550˚C after 5th regeneration phenol conversion was decreased from 22.9% to 15.1% and at 700˚C after 5th regeneration phenol conversion was decreased from 22.9% to 18.8%. For formation ratio of catechol/hydroquinone was increased from 1.28 to 1.45 after 5th regeneration at 550˚C, and from 1.28 to 1.20 after 5th regeneration at 700˚C. The main reasons for deactivation of the catalyst were suggested by analyzing chemical/physical properties with XRD, UV-vis spectra, N2 adsorption/desorption and TGA, and evaluating the catalytic activity such as phenol conversion and product selectivity.