서지주요정보
비담지 Nd-Ni계 촉매의 thiophene 수소화 탈황 반응 특성에 관한 연구 = A study on the characteristics of unsupported Nd-Ni catalysts for thiophene hydrodesulfurization reaction
서명 / 저자 비담지 Nd-Ni계 촉매의 thiophene 수소화 탈황 반응 특성에 관한 연구 = A study on the characteristics of unsupported Nd-Ni catalysts for thiophene hydrodesulfurization reaction / 정오용.
저자명 정오용 ; Jeong, O-Yong
발행사항 [대전 : 한국과학기술원, 1992].
Online Access 제한공개(로그인 후 원문보기 가능)원문

소장정보

등록번호

8003031

소장위치/청구기호

학술문화관(문화관) 보존서고

MCE 92037

SMS전송

도서상태

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초록정보

Unsupported Nd-Ni catalysts were prepared and their catalytic behaviors for thiophene hydrodesulfurization(HDS) were investigated. A series of Nd-Ni catalysts were prepared by precipitation method and characterized by temperature programmed desorption(TPD), X-ray diffraction(XRD) and scanning electron microscopy(SEM). Effects of atomic ratio of Nd to Ni, hydrogen partial pressure, calcination and presulfiding temperature on the catelytic activities of Nd-Ni catalysts for thiophene HDS were investigated and compared with those of conventional Ni-Mo/$Al_2O_3$ catalysts. Nd-Ni catalysts showed synergistic activity for thiophene HDS, although their activities were lower than those of conventional NiMo/$Al_2O_3$ catalysts. The thiophene HDS activities of uncalcined Nd-Ni catalysts were higher than those of calcined catalysts and showed maximum value when the catalysts were presulfided at 350℃. Nd-Ni catalysts had higher resistance to poisoning by $H_2S$ than conventional NiMo/$Al_2O_3$ catalyst, which was tested by varying flow rate of $H_2S$/$H_2$ during the reaction at 475℃. It was found that thiophene HDS activities of Nd-Ni catalysts were less affected by hydrogen partial pressure than those of conventional NiMo/$Al_2O_3$ catalysts. The XRD and SEM measurements showed that uncalcined $NdNi_5$ catalyst with the highest thiophene HDS activity had the lowest crystallinity and lower sintering rate.

서지기타정보

서지기타정보
청구기호 {MCE 92037
형태사항 ix, 85 p. : 삽도 ; 26 cm
언어 한국어
일반주기 부록 수록
저자명의 영문표기 : O-Yong Jeong
지도교수의 한글표기 : 임선기
지도교수의 영문표기 : Son-Ki Ihm
학위논문 학위논문(석사) - 한국과학기술원 : 화학공학과,
서지주기 참고문헌 : p. 79-83
주제 Desulphurization.
촉매. --과학기술용어시소러스
탈황. --과학기술용어시소러스
Catalysts.
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