首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 0 毫秒
1.
2.
3.
Dustiness Measuring Methods of Disperse Powders Industrial handling of bulk materials, for example to store, convey, mix, fill etc. often leads to dust emissions. Generated dust is closely related to health hazards and environmental pollution and often leads to fires and explosions. The dust liberation property of powders depends on a multitude of variables and also on the method and intensity of stressing. The present paper describes further developed resp. used dustiness measuring methods. It also describes particle measurement techniques and summarizes the measurement methods systematically.  相似文献   

4.
Molecular Sieve Membranes for Industrial Applications – Problems, Advances, Solutions Molecular sieve membranes are characterised by their high thermal and chemical resistance and by their monodisperse micropore system. Mixtures can be separated according to molecular size as well as according to adsorptive interactions and diffusion differences. This paper outlines techniques for reproducible production of large area membranes together with methods for their regeneration and repair. Typical separations demonstrate the efficiency of these membranes. Potential application fields can be deduced from developmental trends.  相似文献   

5.
    
  相似文献   

6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
    
Mass Transfer in Micro‐ and Mesoporous Materials Mass transfer in micro‐ and mesoporous materials is of crucial relevance for their practical application to separation and catalysis, since the mobility of adsorbed molecules ultimately limits the rate of the overall processes. Diffusion, i.e. the irregular thermal motion of the molecules, is the dominating process. Diffusion measurements are therefore indispensable for the evaluation of the quality parameters of porous materials. Being able to directly follow the diffusion path of the molecules, microscopic techniques hold a key position among the various methods of diffusion measurement. Besides their fundamentals, the contribution describes the application of these techniques to the investigation of structure‐mobility relations in zeolites and in mesoporous materials of type MCM‐41. As features of particular technological relevance, the phenomena of correlated diffusion anisotropy, of single‐file diffusion, and of molecular traffic control are discussed in detail.  相似文献   

16.
17.
18.
19.
20.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号