Kyushu University · 공학
히로시 노구치 교수의 연구실은 메탈-유기 프레임워크(MOF)를 중심으로 기체의 흡착 거동과 열역학적 거동을 연구합니다. 특히 메탄, 질소, 산소 등의 기체가 특정 체계에서 어떻게 흡착되는지에 대한 정량적 분석과, 게이트 효과를 보이는 흡착 메커니즘을 열역학적 관점에서 규명하고자 합니다. 고정밀 질량 측정법을 활용한 절대 흡착량 평가 기법 개발도 핵심 과제입니다. 이는 기체 저장, 분리, 환경 제어 등 응용 분야에 기초가 되는 기초 연구입니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Both transport delay (DELAY) and dynamic response (RESPONSE) of a mass spectrometer would theoretically result in considerable errors in the breath-by-breath calculation of VCO2 and VO2. However, curiously, the contribution of RESPONSE has been ignored. The purpose of this study is to quantify the error caused by RESPONSE. We found that RESPONSE of a mass spectrometer was regarded as a first-order response. We determined DELAY and time constant (T) of RESPONSE and compensated the on-line calcula
We measured adsorption and desorption isotherms of methane on [Cu(4, 4'-bipyridine)2(BF4)2] (LPC) at 258, 273, and 303 K. Adsorption proceeds almost vertically at a definite pressure, which is named gate pressure. The lower the measurement temperature, the smaller the gate pressure. The temperature dependence of the gate pressure is expressed by the Clapeyron-Clausius equation, giving a thermodynamic evidence on the clathrate formation between the Cu complex and methane.
The supercritical N2, O2, and CH4 adsorption isotherms on a Cu-based metal−organic framework, [Cu(4,4‘-bipyridine)2(BF4)2]n, over the temperature range of 196−303 K were measured by a gravimetric method. The N2 and O2 adsorption isotherms at 196 K showed a vertical adsorption accompanied by a rectangular hysteresis loop. A method of evaluating the absolute adsorption amount of these gases was developed taking into account the intermolecular interactions for the buoyancy-mediated method. The isot
