the pretreatment is effective when the usd oilis mixed at moderate temperatureswith small acount of certain alkline in the presence of a phase transfer catalyst
此項(xiàng)預(yù)處理， 即讓廢油在室溫條件下與少量的堿和相轉(zhuǎn)移催化劑混合，是有效的。
貼主難道做的是地溝油的營(yíng)生？？！ 傷天害理

此項(xiàng)預(yù)處理僅在室溫條件下廢油在與少量的堿和固相轉(zhuǎn)移催化劑作用下才有效。

usd

PTC,相轉(zhuǎn)移催化劑

相變催化劑

https://en.wikipedia.org/wiki/Phase-transfer_catalyst
In chemistry, a phase-transfer catalyst or PTC is a catalyst that facilitates the migration of a reactant from one phase into another phase where reaction occurs. Phase-transfer catalysis is a special form of heterogeneous catalysis. Ionic reactants are often soluble in an aqueous phase but insoluble in an organic phase in the absence of the phase-transfer catalyst. The catalyst functions like a detergent for solubilizing the salts into the organic phase. Phase-transfer catalysis refers to the acceleration of the reaction upon the addition of the phase-transfer catalyst，

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