| 查看: 2311 | 回复: 7 | ||
| 本帖产生 1 个 翻译EPI ，点击这里进行查看 | ||
xizhao2000银虫 (小有名气)
|
[求助]
分子筛相关课题论文摘要求翻译
|
|
|
即将毕业，由于英文水平极差，导致摘要翻译部分被评审老师要求大改，虫友里高手如云，望给小弟多加指点。（这是本人翻译的，错误很多，望虫友帮忙改改） 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年由美国Mobil公司首次研发成功的高硅沸石，具有独特的三维十二元环直通道体系，是唯一具有中孔径手性孔网络结构的沸石。由于其特殊的BEA拓扑结构，Beta沸石的硅铝比可在很大的范围内进行调变，兼具酸催化活性和结构选择性，同时还具有较高的热稳定性，近年来已迅速发展成为一种具有广泛应用前景的新型催化材料。 本论文在实验室前期研究采用类固相法低成本合成Beta沸石工作的基础上，按照优化后的合成方案进行中试放大试验：进一步优选现有的工业化合成原料，向可实现工业化生产的原料及工艺过渡；采用添加晶化促进剂的方法，进一步优选了晶化促进剂、物料配比及晶化时间；确定了适合中试反应釜的搅拌器类型、解决了放大实验过程中遇到的问题，以达到节约原料及能耗，提高产品质量及生产效率，提高Beta沸石综合性价比，进一步降低生产成本的目的。使用本合成方法按不同的投料硅铝比成功中试放大生产出一批Beta沸石产品，对这批产品进行了XRD，XRF，FT-IR，SEM，Py-IR，NH3-TPD及N2吸附等全面表征分析，结果显示本次实验放大合成的这批Beta沸石产品基本无杂晶，相对结晶度均比较高，晶体形貌呈现出一定的规律性，水热稳定性较好，酸量及酸分布比较合理，比表面和孔结构也基本达到要求，取得了较理想的效果。 以中试放大合成的不同硅铝比Beta沸石为活性组分，将其引入模式催化剂中，在微活评价装置上测试其催化活性，并优选活性较好的样品在固定流化床装置上考察其催化裂化性能，结果显示这批Beta沸石产品具有良好的催化性能。最终得到一套类固相法低成本合成Beta沸石以及性能检验的中试方法，为以后的工业化生产积累了宝贵经验。 |
回复此楼» 猜你喜欢
285求调剂
已经有12人回复
-
求调剂
已经有6人回复
-
085600材料与化工301分求调剂院校
已经有19人回复
-
277工科求调剂
已经有11人回复
-
277求调剂 数一104分
已经有13人回复
-
304求调剂
已经有10人回复
-
336求调剂，一志愿中科大
已经有6人回复
-
071000生物学，一志愿深圳大学296分，求调剂
已经有3人回复
-
一志愿北京化工085600 310分求调剂
已经有19人回复
-
274求调剂求调剂
已经有7人回复
AnnF
版主 (文坛精英)
- 翻译EPI: 6
- 应助: 197 (高中生)
- 贵宾: 0.881
- 金币: 443229
- 散金: 5581
- 红花: 2315
- 沙发: 3
- 帖子: 27689
- 在线: 3136.6小时
- 虫号: 1223787
- 注册: 2011-03-07
- 专业: 药物化学
- 管辖: 医药类考试
【答案】应助回帖
★ ★
sltmac: 金币+2 2012-05-24 08:46:01
sltmac: 金币+2 2012-05-24 08:46:01
|
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楼2012-05-24 08:13:54
AnnF
版主 (文坛精英)
- 翻译EPI: 6
- 应助: 197 (高中生)
- 贵宾: 0.881
- 金币: 443229
- 散金: 5581
- 红花: 2315
- 沙发: 3
- 帖子: 27689
- 在线: 3136.6小时
- 虫号: 1223787
- 注册: 2011-03-07
- 专业: 药物化学
- 管辖: 医药类考试
【答案】应助回帖
|
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楼2012-05-24 08:14:02
roc210
木虫 (正式写手)
- 应助: 8 (幼儿园)
- 金币: 2859.1
- 散金: 31
- 红花: 2
- 帖子: 890
- 在线: 89.3小时
- 虫号: 514563
- 注册: 2008-02-29
- 性别: GG
- 专业: 生物化工与食品化工
4楼2012-05-24 08:38:40
【答案】应助回帖
|
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 .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楼2012-05-24 16:25:38
chenlu1988
银虫 (初入文坛)
- 翻译EPI: 1
- 应助: 0 (幼儿园)
- 金币: 500.5
- 帖子: 10
- 在线: 4.3小时
- 虫号: 1649057
- 注册: 2012-02-28
- 性别: MM
|
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. |
6楼2012-05-24 18:13:54
chenlu1988
银虫 (初入文坛)
- 翻译EPI: 1
- 应助: 0 (幼儿园)
- 金币: 500.5
- 帖子: 10
- 在线: 4.3小时
- 虫号: 1649057
- 注册: 2012-02-28
- 性别: MM
【答案】应助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ...
xizhao2000: 金币+280, 翻译EPI+1, ★★★很有帮助 2012-05-29 09:36:09
xizhao2000: 金币+280, 翻译EPI+1, ★★★很有帮助 2012-05-29 09:36:09
|
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. |
7楼2012-05-29 01:31:58
duzhichao
木虫 (小有名气)
- 翻译EPI: 7
- 应助: 31 (小学生)
- 金币: 2617.2
- 散金: 47
- 红花: 1
- 帖子: 295
- 在线: 89.8小时
- 虫号: 1817367
- 注册: 2012-05-15
- 性别: GG
- 专业: 基因组学
【答案】应助回帖
|
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. |
8楼2012-05-29 09:35:00
