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BET测得微孔分子筛表面积只有个位数,这是什么原因? 本人在wako买了一瓶微孔 分子筛 ,想对其进行改性后用日本CEL公司产的BELSORP-mimi做BET,但是得到了一下不合常理的BET数据,表面积只有个位数!!!本次 测试 了三个样,其中一个是直接从厂家买来的微孔分子筛(S=360 m2/g,厂家测得),以及用酸处理后的分子筛和酸处理过后进行改性得到的分子筛,理论上这些表面积都有几百m2/g;三个样的表面积应该差不多的,但是第二个用酸处理得到的面积确有两百多~其它两个样面积就很小~请各朋友帮忙指正!谢谢....ps:在测试前预处理条件是在150℃处理6 h~样品质量是0.1~0.2 g左右!一下上传的是测试的条件以及得到的吸附曲线和BET数据,请帮忙查看!谢谢!测试条件.PNG三条吸附脱附曲线合并在一起.PNG买的分子筛测的吸附脱附曲线.PNG买的分子筛测得的BET.PNG改性后的测得吸附脱附曲线.PNG酸处理后测得到的吸附脱附曲线.PNG酸处理后得到的BET.PNG查看更多 7个回答 . 3人已关注
关于GB 8707-1988钢丝绳标记代号? GB 8707-1988钢丝绳标记代号,本人在工标网上查询得知该标准已经作废,但是不知是被哪个标准取代?有没有清楚的川友请告知。查看更多 1个回答 . 3人已关注
氨合成塔工岗位操作不当致冰机进口结霜、帯氨,相关岗位 ...? 氨合成塔 工岗位操作不当致冰机进口结霜、帯氨,相关岗位怎样处理? 查看更多 9个回答 . 3人已关注
注册设备工程师基础和专业课是不是需要分开考试? 注册设备工程师基础和专业课是不是需要分开考试?查看更多 1个回答 . 2人已关注
aspen EDR V8新功能介绍? aspen EDR V8新功能介绍 Aspen EDR: What's New in V8.0 Aspen EDR The following new features and enhancements were added in release V8.0: New EDR Start Page 全新的开始页面 Direct Access to EDR Online Help 直接连接到EDR的在线帮助 Improved selection of printed reports from EDR 打印报告的选择增强 Improved report identification with the print header 改进的报表与打印头的识别 Improved ‘Import From Aspen Plus’ dialogues 改进从Aspen Plus导入功能 EDR “New” dialogue has been reorganized 重组EDR“新建”的对话已经进行 Aspen EDR Integration with Aspen Plus The following new features and enhancements were added in release V8.0: Improved dialogues for “Send to EDR” from Home Ribbon button New “Rigorous Shell & Tube Sizing” work flow from HeatX setup form New “Rigorous Air-cooled Exchanger Sizing” from HeatX setup form Explicit support for EDR design template files from HeatX EDR Options form Aspen EDR Integration with Aspen HYSYS The following new features and enhancements were added in release V8.0: Button on HYSYS Exchanger to switch streams between shell side and tube side Improved HYSYS Exchanger forms – to clarify model selection New “Rigorous Shell & Tube Auto-sizing” work flow New “Rigorous Shell & Tube Interactive-sizing” work flow New “Rigorous Air Cooler Auto-sizing” work flow New “Rigorous Air Cooler Exchanger Interactive-sizing” work flow Access to full Aspen Shell & Tube user Interface within HYSYS Access to full Aspen Air Cooled user interface within HYSYS Aspen Shell & Tube Exchanger The following new features and enhancements were added in release V8.0: Console, giving an immediate overview of key inputs and results, both tabulated and graphical. New input to help prescribe certain parameters in Design mode. New output of percent excess area, and ratio of actual to allowable pressure drop Option of various types of finned tubes in X-shell Exchangers Corrected maximum ρ v2 (rho-V-squared) limit used for sizing tube side nozzles Options for handling accelerational pressure changes (particular relevance to low pressure exchanger modeling) The handling multiple shells with U-bends has been improved to correctly calculate the shell-side coefficient in all shells There is improved graphical output for X-shell exchangers in calculation details Feedwater Heater Simulation and Rating: For all customers with an Aspen Shell & Tube Exchanger license, the full capability of the Aspen FRAN program is now available Aspen Shell & Tube Mechanical The following new features and enhancements were added in release V8.0: ASME code update for calendar year 2012 Changes based on code cases as applicable Includes BPVC VIII Div 1 and 2 (part 4) – 2011a (2012) The main release will continue to be 2011a in calendar 2012 Material properties updates as applicable Material prices were updated with a resulting average price increase of 2-1/2% Added new tubesheet deflection calculation per mandatory requirement in UHX-13.4(d). Used new derivations per UHX philosophy Added additional flange types Added additional tube-to-tubesheet joint Added option to suppress nozzle reinforcement calculations when exempted by code rules. Added minimum baffle thickness as a function of shell side corrosion allowance Added type ‘g’ nozzles with self reinforcement in accordance to fig. UW-16.1 of ASME VIII Div 1 Added nozzle and reinforcing ring weld size information to the summary output. Added logic to select a larger anchor bolt diameter when the uplift force due to wind and/or seismic loads exceeds the bolt allowable load. Aspen Air Cooled Exchanger The following new features and enhancements were added in release V8.0: Console, giving an immediate overview of key inputs and results, both tabulated and graphical. New input to help prescribe certain parameters in Design mode. New output of percent excess area, and ratio of actual to allowable pressure drop Option to specify the number of passes in design mode New warning on fans with low coverage of the bundle New warning for Designs using program default for allowable pressure drop. Aspen Fired Heater The following new features and enhancements were added in release V8.0: Specification of main process stream duty as an alternative to specifying either inlet or outlet temperature. Specification of inlet enthalpy as an alternative to inlet temperature (for use when FiredHeater models are embedded in Aspen HYSYS or where process and property data are imported from Aspen HYSYS or Aspen Plus Aspen Plate Exchanger The following new features and enhancements were added in release V8.0: Updated pressure drop correlations based on new Aspen HTFS research and modeling. These correlations are described fully in Research Report RS 1227, which is available to the subscribers of Aspen HTFS Research Network. Aspen Plate Fin Exchanger The following new features and enhancements were added in release V8.0: New stream details output for crossflow exchangers, showing how a range of parameters vary across the stream outlet. Values are also shown across each pass outlet, for multi-pass crossflow streams. The parameters include stream pressure changes, and an estimated flow rate variation, based on these changes. Fin databank file now recorded in program output Option to perform flow –balance calculation for crossflow exchanges, to determine the flow variation across the outlet width. Option to apply a multiplier to each process stream flowrate in a Simulation New thermosiphon option, to find the pressure head needed to drive a flow, in addition to option to find the flow rate, or to find the inlet resistance to balance a specified flowrate. 该贴已经同步到 Horse的微博 查看更多 14个回答 . 4人已关注
SNNA美国西纳气动调节阀? 请问各位盖德,有没有使用过美国SNNA 气动调节阀 啊?现在装置安装了好多,还没使用阀盖就生锈了。质量靠谱不?查看更多 9个回答 . 4人已关注
水在精馏中的作用? 我们车间有个填料 精馏塔 ,分离 丙酮 和丙酮氰醇的,要求进料中的水大于百分之一,若低于比分之一则要在进料中加水,请问水在精馏中起的作用??(进料中有丙酮.氢氰酸.丙酮氰醇. 主要是在塔釜得到高纯度的丙酮氰醇)塔底温度118° 塔顶65°查看更多 18个回答 . 5人已关注
哪个品牌的搪玻璃反应釜质量较好? 我们考虑用以下几家: 苏州飞跃工业搪瓷有限责任公司 淄博工业搪瓷厂 临沂市海鑫化工设备有限公司的产品采用钢坯专用 容器板 材质(Q245R)两次予烧、两次打砂的工艺,使其有效的脱减钢坯中的碳元素含量,并使不规则的分子重新排列,优化了钢板的可搪瓷性能,并使钢坯与瓷釉的交触面积在三维空间上得到了最大程度之延伸,大大增强了其密着性,使瓷与钢坯的结合更加牢固。在喷釉工艺中引用酒精做 悬浮剂 和干燥剂,克服了用粘土和其他材料做悬浮剂不易干燥且易生锈斑、影响密着的缺陷。在搪烧中采用常恒温冷搪、烧成技术及稀有元素的引入保证了 搪玻璃 产品优良的耐酸性、可靠的耐温差急变性和耐高温反应,造就了产品独特的天蓝透明的玻璃品质,赢得顾客的信赖和好评。 我们公司郑重承诺:所制造设备一律采用 Q245R 容器板材质!国内使用该型号的钢材的企业不会超过五家企业! 查看更多 35个回答 . 1人已关注
关于测定格式试剂的浓度!? 我想 测试 一下 格式试剂 的浓度,用酸碱滴定法,我的格式试剂在乙醚中溶解度不是很大,我能否静置一段时间,让它沉降下来取上层稍澄清的溶液呢?还是反应完就直接取?谢谢!查看更多 12个回答 . 2人已关注
多肽合成成本为什么总是降不下来? < >现在 多肽 药物,成本都那么高,有没有好的合成方法,象DNA合成那样,能够合成的便宜,你们有什么方法吗?</P>查看更多 18个回答 . 2人已关注
双壳程怎么理解? 双管程可以这样理解:N根并联之后再 串联 , 换热器 的总管根数为 2N,所以管子截面积变为原来的1/2,流速变为原来2倍, 类似上述那样双壳程应该怎么理解呢? 查看更多 4个回答 . 5人已关注
aspen的退出原因? 我的ASPEN2006前期一直好用,近几天发现新建文件是莫名其妙的自动退出,而打开已有的文件运行正常。重装了几次问题仍然存在。 各位高手,请帮忙!查看更多 0个回答 . 4人已关注
MTOl流化床反应器用ASPEN模拟该选什么模块呢? MTOl 流化床 反应器 用ASPEN模拟该选什么模块呢?查看更多 2个回答 . 3人已关注
石灰石石膏法和双减法脱硫脱硫液PH控制在多少合适? 请教大家: 石灰石 石膏 法和双减法是应用于企业锅炉的常见的脱硫除尘方法,其脱硫工艺和脱硫液及PH控制方面存在一定的差异,那么两种方法在脱硫液PH控制方面在什么范围合适?最佳控制值为多少?查看更多 2个回答 . 2人已关注
柴油乳化图片? 柴油 精制后,水洗后的水。 那脱水效果并不理想啊 查看更多 5个回答 . 2人已关注
求助在N上上甲基和三氟乙酸的保护? < ><v:shapetype></v:shapetype> </P><BR>谢谢各位高手查看更多 3个回答 . 2人已关注
“世界重油大会”开到第几届了? “世界重油大会”开到第几届了? 查看更多 0个回答 . 1人已关注
膜的清洗维护? 请大家讨论一下停车期间 离子膜 的清洗。在电解过程中,在膜的表面会形成一些沉积物,是否要进行清洗? # hcbbs 查看更多 2个回答 . 2人已关注
管径1000mm,低压力低流速气体流量测量? 如题,大管径,低压力,低流速的气体流量用什么型式的 流量计 比较合适? 查看更多 4个回答 . 3人已关注
LNG模拟资料 汇总2? 不再赘述 见附件 查看更多 22个回答 . 3人已关注
简介
职业:赛得利(江西)化纤有限公司 - 设备工程师
学校:郑州大学 - 化学系
地区:吉林省
个人简介:人的活动如果没有理想的鼓舞,就会变得空虚而渺小。查看更多
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