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xizhao2000銀蟲 (小有名氣)
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[求助]
分子篩相關(guān)課題論文摘要求翻譯
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即將畢業(yè)，由于英文水平極差，導(dǎo)致摘要翻譯部分被評審老師要求大改，蟲友里高手如云，望給小弟多加指點。（這是本人翻譯的，錯誤很多，望蟲友幫忙改改） Beta zeolite was first exploited by Mobil in the United States at 1967, with a three dimensional network of 12 ring pores straight channel system and it is the only chiral hole in the aperture network zeolite structure. Because of its unique topology BEA, Beta zeolite has lot of advantage, such as easily modulating in the ratio of Si/Al at great range, both acid selective catalytic activity and structure selective, high thermal stability and so on. It rapidly became a new type of catalytic material in recent years and has been widely applicated with promising prospects. In this article, based on the previous research of our laboratory, Beta zeolite was synthesized by solid-phase method in pilot scale at low costs. In order to translation this technology to the industrialized production, existing industrialized synthetic raw materials were further optimizated. Through the research, the kinds of crystallization promoting agent and its optimal amount were studied, while, the crystallization time were also further optimizated. After determined the stirrer type of this reactor and resolved the problem during pilot scale production, a number of Beta zeolite which with different Si/Al ratio were synthesized in pilot scale. These products were characterized by XRD, XRF, FT-IR, SEM, Py-IR, NH3-TPD, N2-absorption, and the results showed that these Beta zeolite products were all qualified. The catalytic activity of these Beta zeolite products were evaluated firstly by MAT (micro-activity test) method, and then the FCC (fluid catalytic cracking) activity were evaluated by fixed-fluid bed reactor. The results showed that these products have good catalytic performance. Finally, a low-costs method to synthesize Beta zeolite and lots of valuable experience for pre-production were obtained. 原文如下： Beta沸石是在1967年由美國Mobil公司首次研發(fā)成功的高硅沸石，具有獨特的三維十二元環(huán)直通道體系，是唯一具有中孔徑手性孔網(wǎng)絡(luò)結(jié)構(gòu)的沸石。由于其特殊的BEA拓?fù)浣Y(jié)構(gòu)，Beta沸石的硅鋁比可在很大的范圍內(nèi)進行調(diào)變，兼具酸催化活性和結(jié)構(gòu)選擇性，同時還具有較高的熱穩(wěn)定性，近年來已迅速發(fā)展成為一種具有廣泛應(yīng)用前景的新型催化材料。 本論文在實驗室前期研究采用類固相法低成本合成Beta沸石工作的基礎(chǔ)上，按照優(yōu)化后的合成方案進行中試放大試驗：進一步優(yōu)選現(xiàn)有的工業(yè)化合成原料，向可實現(xiàn)工業(yè)化生產(chǎn)的原料及工藝過渡；采用添加晶化促進劑的方法，進一步優(yōu)選了晶化促進劑、物料配比及晶化時間；確定了適合中試反應(yīng)釜的攪拌器類型、解決了放大實驗過程中遇到的問題，以達到節(jié)約原料及能耗，提高產(chǎn)品質(zhì)量及生產(chǎn)效率，提高Beta沸石綜合性價比，進一步降低生產(chǎn)成本的目的。使用本合成方法按不同的投料硅鋁比成功中試放大生產(chǎn)出一批Beta沸石產(chǎn)品，對這批產(chǎn)品進行了XRD，XRF，F(xiàn)T-IR，SEM，Py-IR，NH3-TPD及N2吸附等全面表征分析，結(jié)果顯示本次實驗放大合成的這批Beta沸石產(chǎn)品基本無雜晶，相對結(jié)晶度均比較高，晶體形貌呈現(xiàn)出一定的規(guī)律性，水熱穩(wěn)定性較好，酸量及酸分布比較合理，比表面和孔結(jié)構(gòu)也基本達到要求，取得了較理想的效果。 以中試放大合成的不同硅鋁比Beta沸石為活性組分，將其引入模式催化劑中，在微活評價裝置上測試其催化活性，并優(yōu)選活性較好的樣品在固定流化床裝置上考察其催化裂化性能，結(jié)果顯示這批Beta沸石產(chǎn)品具有良好的催化性能。最終得到一套類固相法低成本合成Beta沸石以及性能檢驗的中試方法，為以后的工業(yè)化生產(chǎn)積累了寶貴經(jīng)驗。 |
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【答案】應(yīng)助回帖
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Beta zeolite Mobil Corporation in the United States was first developed in 1967 by the success of high - silica zeolite with a unique three-dimensional 12 - ring straight channel system is the only network structure of the chiral hole in the aperture of the zeolite . As the BEA topology , Beta zeolite Si-Al ratio in the great range of modulation , both the acid catalytic activity and structural selectivity , but also has high thermal stability , in recent years has rapidly developed into a broad prospect of new catalytic materials .Use of the synthetic method in the success of different feed Aluminosilicate than try to enlarge the production of a group of Beta zeolite product , these products by XRD, XRF , FT-IR , SEM, Py- IR , NH3-TPD and N2 adsorption and other comprehensive characterization analysis showed that enlarge the synthesis of these Beta zeolite product of this experiment basic miscellaneous crystal , relatively higher degree of crystallinity than the crystal morphology showing a certain regularity , good hydrothermal stability , the amount of acid acid distribution is more reasonable , specific surface area and pore structure are basically meet the requirements to obtain the desired results . In this thesis, preliminary studies in the laboratory using solid -phase method , low - cost synthesis of Beta zeolite work on the basis of the test in accordance with the optimized synthesis scheme to try to enlarge : further optimization of the existing industrial synthetic raw materials , to the industrial production raw materials and process transition; add a crystallization accelerator , further optimization of crystallization accelerator, the ratio of raw materials and the crystallization time ; to determine the type of pilot reactor stirrer to solve encountered in the amplification experiment problems, in order to achieve the saving of raw materials and energy consumption , improve product quality and production efficiency , improve the comprehensive cost of Beta zeolite , further reducing the production cost . Than Beta zeolite as the active component to try to enlarge the synthesis of different Si-Al catalyst for the introduction of mode , to test their catalytic activity in the micro- live evaluation device , and preferred the better activity of the sample in a fixed fluidized bed device examine its catalytic cracking performance results show that this group of Beta zeolite product has a good catalytic performance . The final solid-phase method , a class of low-cost synthesis of Beta zeolite as well as performance testing of the pilot method , and has accumulated valuable experience for future industrial production . |
5樓2012-05-24 16:25:38
AnnF
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【答案】應(yīng)助回帖
★ ★
sltmac: 金幣+2 2012-05-24 08:46:01
sltmac: 金幣+2 2012-05-24 08:46:01
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Beta zeolite in 1967 by American Mobil company develops its first successful high silicon zeolite, has the unique 3 d 12 yuan ring ended at way system, is the only in chiral hole diameter with network structure of zeolite. Due to its special BEA topology structure, zeolite Beta of aluminum than can be in a silicon performed within the scope of modulation, hold concurrently acid catalytic activity and selectivity structure, and high thermal stability, in recent years has quickly become a wide application prospects of new catalytic materials. This paper in the laboratory using solid phase method of low cost Beta zeolite synthesis based on the work, according to the optimal synthetic scheme to enlarge pilot test: further optimization of the existing industrialized synthetic raw material, can realize the industrialization of production to raw material and technological transition; Add the crystallization of promoting agents method, the optimum further crystallization promoting agents, the material ratio and crystallization time; Sure the reaction kettle for pilot of the mixer type, solve the enlargement in the experimental process problems, so as to save raw materials and energy consumption, improve product quality and production efficiency, improve the comprehensive performance to price ratio zeolite Beta, further decreasing the purpose of the production cost. The use of the synthesis method according to different feeding silicon aluminium than success pilot amplification producing a series of Beta zeolite products, for this batch of product XRD, XRF, ft-ir, SEM, Py-were confirmed by IR, NH3-TPD and N2 adsorption and characterization of comprehensive analysis, the results showed that the experiment amplification this batch of Beta zeolite synthesis product basic no miscellaneous crystal, are relatively high crystallinity, crystal morphology has a certain regularity, water thermal stability is good, acid amount, and acid distribution is more reasonable, than the surface and pore structure and basic requirements, obtained a ideal effect. To enlarge the pilot synthesis different than silicon aluminium Beta for active component zeolite, will introduce into the mode of catalyst, in micro live evaluation device test the catalytic activity, and optimizing active good sample in fixed fluidized bed device consideration of their catalytic cracking performance, the results showed that this batch of Beta zeolite products have good catalytic performance. Finally get a set of solid phase synthesis method low cost Beta zeolite and performance test pilot method for later of industrial production has accumulated valuable experience. |
2樓2012-05-24 08:13:54
AnnF
版主 (文壇精英)
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- 管轄: 醫(yī)藥類考試
【答案】應(yīng)助回帖
|
Beta zeolite Mobil Corporation in the United States was first developed in 1967 by the success of high-silica zeolite with a unique three-dimensional 12-ring straight channel system is the only network structure of the chiral hole in the aperture of the zeolite. As the BEA topology, Beta zeolite Si-Al ratio in the great range of modulation, both the acid catalytic activity and structural selectivity, but also has high thermal stability, in recent years has rapidly developed into a broad prospect of new catalytic materials. In this thesis, preliminary studies in the laboratory using solid-phase method, low-cost synthesis of Beta zeolite work on the basis of the test in accordance with the optimized synthesis scheme to try to enlarge: further optimization of the existing industrial synthetic raw materials, to the industrial production raw materials and process transition; add a crystallization accelerator, further optimization of crystallization accelerator, the ratio of raw materials and the crystallization time; to determine the type of pilot reactor stirrer to solve encountered in the amplification experiment problems, in order to achieve the saving of raw materials and energy consumption, improve product quality and production efficiency, improve the comprehensive cost of Beta zeolite, further reducing the production cost. Use of the synthetic method in the success of different feed Aluminosilicate than try to enlarge the production of a group of Beta zeolite product, these products by XRD, XRF, FT-IR, SEM, Py-IR, NH3-TPD and N2 adsorption and other comprehensive characterization analysis showed that enlarge the synthesis of these Beta zeolite product of this experiment basic miscellaneous crystal, relatively higher degree of crystallinity than the crystal morphology showing a certain regularity, good hydrothermal stability, the amount of acid acid distribution is more reasonable, specific surface area and pore structure are basically meet the requirements to obtain the desired results. Than Beta zeolite as the active component to try to enlarge the synthesis of different Si-Al catalyst for the introduction of mode, to test their catalytic activity in the micro-live evaluation device, and preferred the better activity of the sample in a fixed fluidized bed device examine its catalytic cracking performance results show that this group of Beta zeolite product has a good catalytic performance. The final solid-phase method, a class of low-cost synthesis of Beta zeolite as well as performance testing of the pilot method, and has accumulated valuable experience for future industrial production. |
3樓2012-05-24 08:14:02
roc210
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- 專業(yè): 生物化工與食品化工
4樓2012-05-24 08:38:40
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