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</li> </ol> </div> </div> </div> <main class="news_list_detail_met_16_1_20 met-shownews animsition left"> <div id="nabybmn" class="container"> <div id="nabybmn" class="row sm0"> <div id="nabybmn" class="col-md-9 met-shownews-body" m-id='20'> <div id="nabybmn" class="row"> <section class="details-title border-bottom1"> <h1 class='m-0'>聚合氯化鋁PAC得水溶液是酸性還是堿性的？它是怎么生產出來的？</h1> <div id="nabybmn" class="info font-weight-300"> <span>2024-04-25 09:29:01</span> <span>admin</span> <span> <i class="icon wb-eye m-r-5" aria-hidden="true"></i> 105 </span> </div> </section> <section class="met-editor clearfix"> <p style="text-indent:37px;text-autospace:ideograph-numeric"><span style=";font-family:宋體;font-size:19px"><span style="font-family:宋體">從聚合氯化鋁溶液的</span><span style="font-family:Times New Roman">pH</span><span style="font-family:宋體">值來看，它通常呈現酸性或中性。具體的</span><span style="font-family:Times New Roman">pH</span><span style="font-family:宋體">值取決于聚合氯化鋁的制備方法和濃度。一般而言，聚合氯化鋁溶液的</span><span style="font-family:Times New Roman">pH</span><span style="font-family:宋體">值在</span><span style="font-family:Times New Roman">2.0</span><span style="font-family:宋體">至</span><span style="font-family:Times New Roman">4.5</span><span style="font-family:宋體">之間。這是由于聚合氯化鋁在制備過程中產生了一定量的氯化鋁酸（</span><span style="font-family:Times New Roman">AlCl3</span><span style="font-family:宋體">），從而使溶液呈酸性或呈弱酸性。</span></span></p><p style="text-indent:37px;text-autospace:ideograph-numeric"><span style=";font-family:宋體;font-size:19px"><span style="font-family:宋體">然而，需要注意的是，聚合氯化鋁的酸性主要體現在其溶液中的</span><span style="font-family:Times New Roman">Al3+</span><span style="font-family:宋體">離子的水解反應。當聚合氯化鋁加入水中時，其分解為</span><span style="font-family:Times New Roman">Al3+</span><span style="font-family:宋體">離子和</span><span style="font-family:Times New Roman">Cl-</span><span style="font-family:宋體">離子。</span><span style="font-family:Times New Roman">Al3+</span><span style="font-family:宋體">離子在水中發(fā)生水解反應，生成氫氧化鋁（</span><span style="font-family:Times New Roman">Al(OH)3</span><span style="font-family:宋體">）沉淀。這個水解過程會釋放出氫離子（</span><span style="font-family:Times New Roman">H+</span><span style="font-family:宋體">），導致溶液的酸性增強。</span></span></p><p style="text-indent:37px;text-autospace:ideograph-numeric"><span style=";font-family:宋體;font-size:19px"><span style="font-family:宋體">目前國內外已有大量專利和文獻報道了數十種聚合氯化鋁制備工藝及方法，主要包括：氯化鋁溶液加堿，金屬鋁或鋁屑溶于鹽酸或堿溶液，氫氧化鋁凝膠溶于鹽酸，含鋁礦石、煉鋁中間液以鹽酸處理，廢鋁灰或煤矸石以鹽酸或堿液處理等制備方法，也有報道采用離子交換樹脂法，即令氯化鋁溶液通過</span><span style="font-family:Times New Roman">R-OH</span><span style="font-family:宋體">型陰離子交換樹脂柱或將樹脂放置于氯化鋁溶液中，反應一定時間后加以分離，將</span><span style="font-family:Times New Roman">Cl</span><span style="font-family:宋體">離子代換成</span><span style="font-family:Times New Roman">OH-</span><span style="font-family:宋體">離子，從而得到相應的氯化鋁制品。</span></span></p> </section> <div id="nabybmn" class='met-page p-y-30 border-top1'> <div id="nabybmn" class="container p-t-30 "> <ul class="pagination block blocks-2 text-xs-center text-sm-left"> 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