多磷酸（PPA）广泛用作各种反应中的酰化和烷基化试剂。它是一种强无机酸，具有优异的脱水性能。 应用 多磷酸可用于合成芳族砜， N -取代的酰胺和 4-氨基二苯甲酮。它也可用于脱水，Fischer-Indole 合成，Beckmann 重排和 Schmidt 重排反应。它可以用作合成各种芳族酮的催化剂。 PPA 可以在从尿素和甲醇合成碳酸二甲酯（DMC）的过程中用作催化剂。它还可作为该过程中产生的氨的吸收剂。PPA 可用于制备二氧化硅负载的多磷酸（PPA-SiO 2 ），一种易于处理、可重复使用的非均相催化剂。 其他说明 我们致力于为您提供更环保的替代产品，以符合“绿色化学的12项原则”的一项或多项原则要求。该产品为增强型，提高了能源效率。 点击此处 ，查看更多详情。 Polyphosphoric acid (PPA) is widely employed as acylation and alkylation reagent in various reactions. It is a strong mineral acid with excellent dehydrating properties. Application Polyphosphoric acid may be used in the synthesis of aromatic sulfones, N -substituted amides and 4-aminobenzophenones. It may also be used in dehydration, Fischer-Indole Synthesis, Beckmann Rearrangement and Schmidt Rearrangement reactions. It can be used as a catalyst in the synthesis of various aromatic ketones. PPA may be used as a catalyst during the synthesis of dimethyl carbonate (DMC) from urea and methanol. It also acts as an absorbent for the ammonia generated in the process. PPA may be used to prepare silica-supported polyphosphoric acid (PPA-SiO 2 ), an easy to handle, reusable heterogenous catalyst. Other Notes We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for energy efficiency. Find details here .