http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Sirous Khorram (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Khataee, Alireza,Gholami, Peyman,Sheydaei, Mohsen,Khorram, Sirous,Joo, Sang Woo CNRS 2016 NEW JOURNAL OF CHEMISTRY Vol.40 No.6
<P>Pyrite nanostructures were prepared from pyrite ore particles using a simple and practical plasma treatment process based on the N-2 sputtering technique. The nanostructures were characterized using different techniques, such as XRD, FT-IR, SEM, EDX, XPS, and BET analysis. The performance of the plasma-treated pyrite (PTP) was investigated as a new efficient catalyst for the decolorization of reactive orange 29 (RO29) by the heterogeneous Fenton process in a batch system. 97.6% decolorization was observed in the PTP/H2O2 process, which was higher than the 38.4% decolorization efficiency of the untreated pyrite/H2O2 process. The effects of the operational parameters on the decolorization efficiency were examined, and the 97.6% decolorization efficiency was obtained with an initial RO29 concentration of 20 mg L-1, H2O2 concentration of 3 mM, catalyst dosage of 2 g L-1, pH 5, and reaction time of 90 min. The result obtained from the successive application of PTP in the heterogeneous Fenton processes improved the stability of the catalyst in long-term applications. A plausible degradation pathway of RO29 is proposed based on gas chromatography-mass spectroscopy analysis to explain the improved degradation of RO29 through the PTP/H2O2 process.</P>
-
Investigating the Cold Plasma Surface Modification of Kaolin- and Attapulgite-Bound Zeolite A
Mahboobeh Ejtemaei,Sepehr Sadighi,Mehdi Rashidzadeh,Sirous Khorram,Jan O. Back,Simon Penner,Michael F. Noisternig,Dariush Salari,Aligholi Niaei 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.106 No.-
Hydrophilic zeolites with low catalytic activity are considered as suitable adsorbents for drying gasstreams containing olefinic compounds. In this contribution, the surface treatment of kaolin and attapulgite/zeolite A extrudates is investigated using argon glow discharge plasma. The zeolite is synthesizedfrom kaolin using the hydrothermal method. Surface and bulk characterization is performed using X-raydiffraction (XRD), scanning electron microscopy (SEM), N2 physisorption, Fourier-transform infrared (FTIR)spectroscopy, temperature-programmed-desorption (TPD) of NH3 and X-ray photoelectron spectroscopy(XPS) techniques. Plasma treatment increases surface area and pore volume, but it decreasesthe weak acidic site density of the extrudates. The obtained results show that attapulgite/zeolite extrudatesare more affected by plasma treatment than kaolin/zeolite extrudates. The catalytic activity ofuntreated and plasma-treated extrudates are compared with respect to coke formation resulting from1-butene and 1,3-butadiene. The plasma-treated sample is more resistant to coke formation (35%decrease compared to untreated one). The potassium contents of extrudates decreased as a result of sputteringloosely bound potassium cations on the crystal surface by argon ions, which led to a decrease inwater sorption capacity (by 15% of the initial sorption capacity).
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
