The carrier is calcined after loading the sulfating agent and the chromium on the carrier.
在将硫酸化剂和铬装载在载体之后煅烧载体。
Alternatively, the carrier can be calcined after contacting the carrier with the sulfating agent and before contacting the carrier with an organic chromium compound.
可选地，可以在载体与硫酸化剂接触之后且载体与有机铬化合物接触之前煅烧载体。
Alternatively, the carrier can be calcined after contacting the carrier with the sulfating agent and before contacting the carrier with an organic chromium compound.
可选地，可以在载体与硫酸化剂接触之后且载体与有机铬化合物接触之前煅烧载体。
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