서지주요정보
황화반응된 흡수제 (CuO/γ-$Al_2O_3$)의 수소에 의한 재생반응 특성 = Regeneration characteristics of sulfated sorbent (CuO/γ-$Al_2O_3$) by hydrogen
서명 / 저자 황화반응된 흡수제 (CuO/γ-$Al_2O_3$)의 수소에 의한 재생반응 특성 = Regeneration characteristics of sulfated sorbent (CuO/γ-$Al_2O_3$) by hydrogen / 정상문.
저자명 정상문 ; Jeong, Sang-Mun
발행사항 [대전 : 한국과학기술원, 1995].
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소장정보

등록번호

8005814

소장위치/청구기호

학술문화관(문화관) 보존서고

MCHE 95031

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초록정보

Sulfation reaction or CuO/γ-alumina sorbent can be classified into three types in terms of the amount of sulfate ions present on the support namely, surface, slightly deep, and bulk sulfations as a function of reaction temperature and CuO loading. The effects of regeneration temperature, types of sulfate and the number of sulfation-regeneration cycles on the regeneration characteristics have been determined in a thermogravimetric analyzer (TGA). The reductions of sulfate on copper and alumina sites occur above 300℃ and 400℃ respectively with 5 vol%-$H_2$. Sulfur compounds produced from the regeneration reaction are $SO_2(<450℃)$ and $H_2S(>450℃)$. Residual sulfate is observed in all the sorbents after the regeneration at 300 ~ 500℃. The amount of residual sulfate decreases with increasing temperature upto 450℃ but, it remains constant with a further increase in temperature upto 500℃. The amount of residual sulfate in surface sulfation is larger than that in bulk sulfation due to strong interaction between $SO_2$ and alumina. In the sulfation-regeneration cycle reaction, residual sulfate is accumulated up to 4th cycles however, the accumulation does not proceed further with increasing the cycle up to 10 times with the sulfation activity of 3th cycles. The inhibiting effect of $SO_2$ on the regeneration reaction of sulfated sorbent have also been determined with variation of $SO_2$ concentration. The regeneration reaction is inhibited largely with $SO_2$ concentration. The evidences of inhibition are the low initial reaction rate and lower pseudoequilibrium in the regeneration reaction. For lower $SO_2$ concentrations, weight gain occurs after rapid initial weight loss. After bulk sulfation, surface area and pore volume of the sulfated sorbent are smaller compared with the fresh sorbent. Surface area and pore volume of the regenerated sorbent increase with increasing reduction temperature.

서지기타정보

서지기타정보
청구기호 {MCHE 95031
형태사항 viii, 96 p. : 삽도 ; 26 cm
언어 한국어
일반주기 부록 수록
저자명의 영문표기 : Sang-Mun Jeong
지도교수의 한글표기 : 김상돈
지도교수의 영문표기 : Sang-Done Kim
학위논문 학위논문(석사) - 한국과학기술원 : 화학공학과,
서지주기 참고문헌 : p. 84-87
주제 Particle regeneration (Nuclear physics)
Sulfate.
Adsorption.
흡착. --과학기술용어시소러스
지원회수
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