1 / 2

Final Examination 2011

Final Examination 2011. 3A , 4A, 5A zeolites 는 차이에 대해서 설명하시요 ? Explain how to distinguish zeolite 3A, 4A and 5A. 5 points 2) 제올라이트 결정화 단계를 나타내는 S-shaped crystallization curve 에

veta
Download Presentation

Final Examination 2011

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Final Examination 2011 • 3A, 4A, 5A zeolites는 차이에 대해서 설명하시요? • Explain how to distinguish zeolite 3A, 4A and 5A. 5 points • 2) 제올라이트결정화 단계를 나타내는 S-shaped crystallization curve 에 • 관하여 기술 하시요.Explain S-shape crystallization curve in zeolite synthesis. 5 points • Mesoporousformation mechanism에 대해서 간단히 설명하시요. 5 points • Explain formation mechanism of Mesoporous materials in terms of corperative self-assembly process. • 아래 각각의 제올라이트의 구조 및 SBU(secondary builing unit) 에 대해서 간략하게 • 설명하고 ( 5 point) 아래의 질문에 답하시요. • 상온에서 아래의 제올라이트를 사용하여 물(H2O) 에소량 존재 하는 1-hexanol • 을 분리할려고 할때 • a. 아래의 제올라이트로 분리하기 위한 기준은 무엇인지? (10 pt) • b. hydrophilic or a hydrophobic zeolite개념을 사용하여 분리할 수 있는지? 있다면 이유는? (10pt) • c. 무슨 제올라이트가 가장적당한지, 이유는? (10 pt) • Type zeolite Pore dimensions (Å) • Na-A 4.1×4.1 • Silicalite-1 5.2×5.6 • H-ZSM-5 5.2×5.6 • All-silica Beta 6.4×7.0 • H-Beta 6.4×7.0

  2. 4. For the separation of the impurity 1-hexanol from an aqueous waste stream at room temperature a proposed solution suggests the use of zeolites. a. What are three adsorption criteria for this kind of zeolite application? (10 pt) b. Will you use a hydrophilic or a hydrophobic zeolite for this separation ? Why ? (10 pt) c. Which zeolite(s) has(have) your preference and why ? (10 point) d. Explain following zeolite structure and SBU. (IZA web site) (5 point) Type zeolite Pore dimensions (Å) Na-A 4.1×4.1 Silicalite-1 5.2×5.6 H-ZSM-5 5.2×5.6 All-silica Beta 6.4×7.0 H-Beta 6.4×7.0

More Related