서지주요정보
백금-이리듐 촉매의 활성도, 선택도 및 안정도에 관한 연구 = Activity, selectivity and stability of Pt-Ir bimetallic catalysts
서명 / 저자 백금-이리듐 촉매의 활성도, 선택도 및 안정도에 관한 연구 = Activity, selectivity and stability of Pt-Ir bimetallic catalysts / 양오봉.
저자명 양오봉 ; Yang, O-Bong
발행사항 [서울 : 한국과학기술원, 1987].
Online Access 원문보기 원문인쇄

소장정보

등록번호

4104626

소장위치/청구기호

학술문화관(문화관) 보존서고

MCE 8717

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

초록정보

A series of Pt-Ir bimetallic catalyst and monometallic catalysts were prepared by impregnation method. The activity, selectivity and activity maintenance of the HY-Zeolite and $γ-Al_2O_3$ supported catalysts were determined under flow conditions at 1 atm for the conversion of n-hexane. Additional catalyst characterization was provided by hydrogen chemisorption. Activity, selectivity and activity maintenance of the pt-Ir bimetallic catalyst was not affected by catalyst calcination temperature. Significant decrease in dispersion was observed for iridium monometallic catalysts, but small decrease in dispersion was observed for platinum and platinum-iridium bimetallic catalysts. For Pt-Ir/$γ-Al_2O_3$, the highest activity and enhanced activity maintenance were observed at 500℃. Also, Pt-Ir/$γ-Al_2O_3$ gave higher selectivity for benzene and cracking reaction than Pt-Ir/HY-Zeolite, while, for Pt-Ir/HY-zeolite the highest activity and enhanced activity maintenance were observed at 350℃. Also, Pt-Ir/HY-zeolite gave higher selectivity for isormerization reaction, than Pt-Ir/$γ-Al_2O_3$. Because the Pt-Ir bimetallic catalysts showed platinum like activity and selectivity, the 0.5 wt% Pt-0.5 wt% Ir bimetallic catalyst surface composition seems to platinum rich phase. When iridium is present the catalysts are much more stable, and have much higher selectivity for cracking reaction.

서지기타정보

서지기타정보
청구기호 {MCE 8717
형태사항 vii, 62 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : O-Bong Yang
지도교수의 한글표기 : 김영걸
지도교수의 영문표기 : Young-Gul Kim
학위논문 학위논문(석사) - 한국과학기술원 : 화학공학과,
서지주기 참고문헌 : p. 57-59
주제 Chemisorption.
촉매. --과학기술용어시소러스
선택성. --과학기술용어시소러스
Catalysts.
QR CODE qr code