Conversion of Y into SSZ-13 zeolite, in the absence of extra silica, alumina and seed crystals, with N,N,N-dimethylethylcyclohexylammonium bromide, and application of the SSZ-13 zeolite in the propylene production from ethylene

In this study, SSZ-13 was obtained, with a relatively inexpensive template, N,N,N-dimethylethylcyclohexylammonium bromide, from conversion of Y zeolites with wide silica/alumina ratios (SARs), especially in the absence of any crystal seed, additional silica and alumina. The obtained SSZ-13 s have relatively wide SAR of 6.9-36.7; and phase-pure SSZ-13 s could also be obtained from mixture of Y zeolites. The obtained SSZ-13 s, in proton form, were applied in ethylene-to-propylene (ETP) reaction, and the SSZ-13 with suitable SAR (18.8) had not only high propylene yield but also stable propylene production compared with other SSZ-13 s, showing the possible application of the SSZ-13 in ETP reaction.Graphical abstract
Source: Catalysis Today - Category: Chemistry Source Type: research

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While China can mobilize a huge national response to the outbreak, its response to the crisis is also a lesson in how the country ’s political weak points can carry grave consequences for world health.
Source: NYT Health - Category: Consumer Health News Authors: Tags: Coronavirus (2019-nCoV) China Politics and Government SARS (Severe Acute Respiratory Syndrome) Epidemics Xi Jinping Regulation and Deregulation of Industry Source Type: news
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Source: Browsing - Category: Databases & Libraries Tags: coronavirus Wuhan Source Type: blogs
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Source: The Lancet - Category: General Medicine Source Type: research
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Source: The Lancet - Category: General Medicine Source Type: research
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Source: ABC News: Health - Category: Consumer Health News Tags: Health Source Type: news
A rapidly evolving health story broke in late December when a novel illness originating in Wuhan, China made the news. Reports of the number of infected people swiftly rose, and isolated cases of this new coronavirus — dubbed 2019-nCoV by scientists — have appeared in several countries due to international travel. At this writing, almost 1,300 confirmed cases and over 40 deaths have occurred in China, according to an article in the New York Times. Fortunately, public health officials in many countries, including the US, have put measures in place to help prevent further spread of the virus. These measures inclu...
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Source: Guardian Unlimited Science - Category: Science Authors: Tags: Coronavirus outbreak China Global health Asia Pacific Science Society World news Microbiology Medical research Global development Sars Source Type: news
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Source: Guardian Unlimited Science - Category: Science Authors: Tags: Coronavirus outbreak Science China Asia Pacific Infectious diseases World news Source Type: news
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