【Daily Question】10.27 Multiple-choice question: During the pre-sulfurization of a catalyst, at a certain pressure, there is an optimal value
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This post was last edited by Guan Gongyu on 2015-10-29 at 18:59. When a catalyst is pre-vulcanized, there is an optimal vulcanization temperature at a certain pressure, and this temperature ( ) as the pressure increases. A. Unchanged B. Decreased C. Increased D. Irregular. C. 1. [Petroleum and Chemicals Section] Register for the “SimSun Font” competition: http://bbs.hcbbs.com/thread-1469130-1-1.html 2. [Petroleum and Chemicals Section] Your own posting thread: http://bbs.hcbbs.com/thread-1484021-1-1.html 3. [Petroleum and Chemicals Section] Thread for sharing ideas freely: http://bbs.hcbbs.com/thread-1482814-1-1.html 4. [Petroleum and Chemicals Section] I’m here among my peers – Survey on the basic information of members in the Petroleum and Chemicals Section: http://bbs.hcbbs.com/thread-1485340-1-1.htm
C, increase-----------------------------------------------------
During the pre-sulfurization of the catalyst, at a certain pressure, there is an optimal sulfurization temperature, and this temperature increases as the pressure rises (C).
During the pre-sulfurization of the catalyst, at a certain pressure, there is an optimal sulfurization temperature, and this temperature increases as the pressure rises (C). A. Unchanged B. Decreased C. Increased D. Irregular
During the pre-sulfurization of the catalyst, at a certain pressure, there is an optimal sulfurization temperature, and this temperature increases as the pressure rises (C). A. Unchanged B. Decreased C. Increased D. Irregular
The correct answer for this question is C: vulcanization should take place at lower pressures; as the vulcanization temperature increases, the catalyst’s ability to remove sulfur and nitrogen decreases, and the optimal vulcanization temperature at low pressures is lower； As pressure increases, the optimal vulcanization temperature also rises. At a certain pressure, there is an optimal vulcanization temperature; this temperature increases as the pressure rises, and this phenomenon may be related to the cracking and condensation temperatures of hydrocarbons during the vulcanization process.
C, keeps rising and rising,
During the pre-sulfurization of the catalyst, at a certain pressure, there is an optimal sulfurization temperature, and this temperature increases as the pressure rises (C). A. Unchanged B. Decreased C. Increased D. Irregular
During the presulfurization with C catalyst, at a certain pressure, there is an optimal sulfurization temperature, and this temperature increases as the pressure rises.
During the presulfurization with C catalyst, at a certain pressure, there is an optimal sulfurization temperature, and this temperature increases as the pressure rises.