A note on the evaluation of the guest-gas uptake into a clathrate hydrate being formed in a semibatch- or batch-type reactor

2008 ◽  
Vol 49 (5) ◽  
pp. 1056-1062 ◽  
Author(s):  
Yasuhiko H. Mori ◽  
Naoya Komae
Keyword(s):  
Clathrate Hydrate ◽  
Gas Uptake ◽  
Type Reactor ◽  
Batch Type

scholarly journals Hydrogenation of Aqueous Acetic Acid over Ru-Sn/TiO2 Catalyst in a Flow-Type Reactor, Governed by Reverse Reaction

Catalysts ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1270
Author(s):  
Yuanyuan Zhao ◽  
Kansei Konishi ◽  
Eiji Minami ◽  
Shiro Saka ◽  
Haruo Kawamoto
Keyword(s):  
Acetic Acid ◽  
Ethanol Yield ◽  
Batch Process ◽  
Gas Production ◽  
Reverse Reaction ◽  
Side Reactions ◽  
Aqueous Acetic Acid ◽  
Type Reactor ◽  
Flow Type ◽  
Batch Type

Ru-Sn/TiO2 is an effective catalyst for hydrogenation of aqueous acetic acid to ethanol. In this paper, a similar hydrogenation process was investigated in a flow-type rather than a batch-type reactor. The optimum temperature was 170 °C for the batch-type reactor because of gas production at higher temperatures; however, for the flow-type reactor, the ethanol yield increased with reaction temperature up to 280 °C and then decreased sharply above 300 °C, owing to an increase in the acetic acid recovery rate. The selectivity for ethanol formation was improved over the batch process, and an ethanol yield of 98 mol % was achieved for a 6.7 min reaction (cf. 12 h for batch) (liquid hourly space velocity: 1.23 h−1). Oxidation of ethanol to acetic acid (i.e., the reverse reaction) adversely affected the hydrogenation. On the basis of these results, hydrogenation mechanisms that include competing side reactions are discussed in relation to the reactor type. These results will help the development of more efficient catalytic procedures. This method was also effectively applied to hydrogenation of lactic acid to propane-1,2-diol.

scholarly journals Automated chemical synthesis. Part 4: Batch-type reactor automation and real-time software design

1986 ◽  
Vol 8 (3) ◽  
pp. 106-121 ◽  
Author(s):  
Daniel F. Chodosh ◽  
Kenneth Kamholz ◽  
Sidney H. Levinson ◽  
Robert Rhinesmith
Keyword(s):  
Chemical Synthesis ◽  
Real Time ◽  
Software Design ◽  
Type Reactor ◽  
Batch Type

Unraveling structural and magnetic information during growth of nanocrystalline SrFe12O19

2016 ◽  
Vol 4 (46) ◽  
pp. 10903-10913 ◽  
Author(s):  
Cecilia Granados-Miralles ◽  
Matilde Saura-Múzquiz ◽  
Espen D. Bøjesen ◽  
Kirsten M. Ø. Jensen ◽  
Henrik L. Andersen ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Ex Situ ◽  
Type Reactor ◽  
Batch Type

Hydrothermal synthesis of SrFe12O19 is followed in situ using PXRD, and successfully reproduced ex situ using a custom-designed batch-type reactor.

A new approach to the mechanism for the acetalization of benzaldehyde over MOF catalysts

2020 ◽  
Vol 44 (35) ◽  
pp. 14865-14871
Author(s):  
Esteban Camu ◽  
Cesar Pazo ◽  
Daniel Becerra ◽  
Yoan Hidalgo-Rosa ◽  
Dayan Paez-Hernandez ◽  
...  
Keyword(s):  
Kinetic Study ◽  
Atmospheric Pressure ◽  
Room Temperature ◽  
New Approach ◽  
Type Reactor ◽  
Batch Type

The benzaldehyde acetalization catalyzed by UiO-66 and UiO-66F, was carried out in a batch-type reactor at room temperature and atmospheric pressure, and the full kinetic study was performed using the Langmuir–Hinshelwood and Eley–Rideal models.

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