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中大研發(fā)新型電解槽有效促進二氧化碳回收助實踐碳中和目標

指南者留學(xué) 2022-07-28 15:38:35 閱讀量：1402

<div data-page-id="doxcnk8Ixq2y7cbLpINzXmeoXXb" data-docx-has-block-data="true"> <div class="image-uploaded gallery old-record-id-doxcnGkws2cGSO8k04vKYNRlDcg" style="text-align: justify;" data-type="image" data-ace-gallery-json="{"items":[{"uuid":"69b45f16-7bcc-463c-897f-ad7661b8baad","height":1780,"width":2500,"currHeight":1780,"currWidth":2500,"natrualHeight":1780,"natrualWidth":2500,"pluginName":"imageUpload","scale":1,"src":"https%3A%2F%2Finternal-api-drive-stream.feishu.cn%2Fspace%2Fapi%2Fbox%2Fstream%2Fdownload%2Fall%2FboxcnGMhv2aJqmJef31kMfKzQdc%2F%3Fmount_node_token%3DdoxcnGkws2cGSO8k04vKYNRlDcg%26mount_point%3Ddocx_image","file_token":"boxcnGMhv2aJqmJef31kMfKzQdc","image_type":"image/png","size":2001491,"comments":[]}]}"><span class="p"><img src="https://info.compassedu.hk/sucai/content/1659339121036/1659339121036.png" width="808" height="575" /></span></div> <div class="ace-line ace-line old-record-id-doxcnUOiGk2QYEMassRDDUQA62c" style="text-align: justify;"><span class="p"> </span></div> <div class="ace-line ace-line old-record-id-doxcnOqsmsEK0sMe2QzW2NQWYAd" style="text-align: justify;"><span class="h6">王教授研究團隊研發(fā)的酸性二氧化碳電解槽，能有效回收及轉(zhuǎn)化二氧化碳，為化工制造業(yè)實踐碳中和目標提供新路向。</span></div> <div class="ace-line ace-line old-record-id-doxcnasoUOMaWcyKuO4aYG7civd" style="text-align: justify;"><span class="p"> </span></div> <div class="image-uploaded gallery" style="text-align: justify;" data-type="image" data-ace-gallery-json="{"items":[{"uuid":"81111c65-d88d-4ffc-b102-a5a4793c716b","height":1278,"width":1705,"currHeight":1278,"currWidth":1705,"natrualHeight":1278,"natrualWidth":1705,"pluginName":"imageUpload","scale":1,"src":"https%3A%2F%2Finternal-api-drive-stream.feishu.cn%2Fspace%2Fapi%2Fbox%2Fstream%2Fdownload%2Fall%2FboxcnR9ef4lcdY6B5AhoqR8BQkg%2F%3Fmount_node_token%3DdoxcnmsO006uYkMmM2r7eNBfaod%26mount_point%3Ddocx_image","file_token":"boxcnR9ef4lcdY6B5AhoqR8BQkg","image_type":"image/png","size":1633948,"comments":[]}]}"><span class="p"><img src="https://info.compassedu.hk/sucai/content/1659339128711/1659339128711.png" width="808" height="605" /></span></div> <div class="ace-line ace-line old-record-id-doxcnsSSCciqqcQsyKSRSOD3NcE" style="text-align: justify;"><span class="p"> </span></div> <div class="ace-line ace-line old-record-id-doxcnSuwco0i8msIA65nCrQQiGc" style="text-align: justify;"><span class="p">香港中文大學(xué)（中大）化學(xué)系助理教授<strong>王瑩教授</strong>領(lǐng)導(dǎo)的研究團隊最近研發(fā)了一種新型電化學(xué)系統(tǒng)—酸性二氧化碳電解槽，可利用再生能源將二氧化碳（CO((2))）與水（H((2))O）轉(zhuǎn)化成商用化工原材料，轉(zhuǎn)化效率高達60%，有助化工產(chǎn)業(yè)實現(xiàn)低碳轉(zhuǎn)型。研究成果最近已刊登在著名科學(xué)期刊《自然催化》上。</span></div> <div class="ace-line ace-line old-record-id-doxcnIOgYwSkc6eyyA7o0pRJJVw" style="text-align: justify;"><span class="p"> </span></div> <div class="ace-line ace-line old-record-id-doxcnEeMAumuWSGgokZNuUF8Vrh" style="text-align: justify;"><span class="p"><strong>目前CO</strong>((2))<strong>電解槽技術(shù)的碳利用效率甚低</strong></span></div> <div class="ace-line ace-line old-record-id-doxcny4UgW2QSEam2s1cXnKxGfe" style="text-align: justify;"><span class="p"> </span></div> <div class="ace-line ace-line old-record-id-doxcnaU02gMyOiQI6yr0x3v66tb" style="text-align: justify;"><span class="p">要減緩全球暖化的影響，除了減少溫室氣體排放外，降低大氣中的CO((2))含量同樣重要。全球有近八成的CO((2))排放量來自燃燒化石燃料，而日常生活中經(jīng)常接觸到的物品如化妝品、洗滌劑和塑膠等，皆由燃燒化石燃料后經(jīng)化學(xué)合成得來的副產(chǎn)品。因此，發(fā)展碳捕獲和轉(zhuǎn)化技術(shù)，如電化學(xué)CO((2))還原反應(yīng)（CO((2)) reduction reaction，CO((2))RR），將燃燒化石燃料排放出來的CO((2))回收轉(zhuǎn)化為生產(chǎn)這些化工制品的原材料，被視為是減少對化石燃料依賴的重要方法之一。</span></div> <div class="ace-line ace-line old-record-id-doxcnEoEksAomMqkckPyPVdC5zg" style="text-align: justify;"><span class="p"> </span></div> <div class="ace-line ace-line old-record-id-doxcnIw8ICo0qCwOOGUaqln5S9b" style="text-align: justify;"><span class="p">目前電化學(xué)CO((2))RR多在堿性條件下進行，轉(zhuǎn)化過程中有逾85%的CO((2))會被電解液消耗并產(chǎn)生碳酸鹽，大量流失可使用的CO((2))。故化工業(yè)界往往需要利用額外能源及成本回收CO((2))并將其轉(zhuǎn)化，碳利用率低至25%。</span></div> <div class="ace-line ace-line old-record-id-doxcnU6O4c4aGkeiaQnkX5Okmef" style="text-align: justify;"><span class="p"> </span></div> <div class="ace-line ace-line old-record-id-doxcncuAc6s2K00kQGkFudh805c" style="text-align: justify;"><span class="p"><strong>新型酸性CO</strong>((2))<strong>電解槽加入鈀銅催化劑提升碳利用率</strong></span></div> <div class="ace-line ace-line old-record-id-doxcnOWuIaS4u6sWYywvCeBO7wf" style="text-align: justify;"><span class="p"> </span></div> <div class="ace-line ace-line old-record-id-doxcnayWee6GsuAyOQTIKGtGh9e" style="text-align: justify;"><span class="p">為提高碳利用效率，王教授與多倫多大學(xué)電子與計算機工程系團隊合作，研發(fā)一種新型酸性CO((2))電解槽，有效抑制碳酸鹽的形成，減少CO((2)) 在轉(zhuǎn)化過程中流失。團隊更加入鈀銅催化劑（Palladium-Copper catalyst，Pd-Cu catalyst），以抑制酸性環(huán)境下產(chǎn)氫反應(yīng)（hydrogen evolution reaction，HER）所帶來的競爭反應(yīng)，將碳利用率提升，令更多CO((2))轉(zhuǎn)換成重要化工原料，如乙烯（Ethylene）。在電流密度為500 mA/cm((2)) 的條件下，新型酸性CO((2))電解槽系統(tǒng)能有效將CO((2))利用率提升至60%。</span></div> <div class="ace-line ace-line old-record-id-doxcnE8OueSAUOeMy8wj3p5PPXb" style="text-align: justify;"><span class="p"> </span></div> <div class="ace-line ace-line old-record-id-doxcn4O0k4UoAMq0gMtrG2ajW21" style="text-align: justify;"><span class="p">王教授說：「此項目能夠打破當前堿性CO((2))RR電解槽碳利用率的上限。我們正在努力擴大原型制作，希望將技術(shù)產(chǎn)業(yè)化，為發(fā)展環(huán)?？萍技熬G色經(jīng)濟轉(zhuǎn)型出一分力。”</span></div> <div class="ace-line ace-line old-record-id-doxcnCyU6CgGuE6CkkFpvURGA5g" style="text-align: justify;"><span class="p"> </span></div> <div class="ace-line ace-line old-record-id-doxcn6SsWuoS6mwgyK4XBZQ23Kd" style="text-align: justify;"><span class="p">研究論文全文：<a href="https://www.nature.com/articles/s41929-022-00788-1" target="_blank" rel="noopener">https://www.nature.com/articles/s41929-022-00788-1</a></span></div> <div class="ace-line ace-line old-record-id-doxcncuE6KGacMmquMtSXutytqf" style="text-align: justify;"><span class="p"> </span></div> <div class="ace-line ace-line old-record-id-doxcn8mO8k22YK2kCAQW9GVH4no" style="text-align: justify;"><span class="p"><strong>關(guān)于王瑩教授</strong></span></div> <div class="ace-line ace-line old-record-id-doxcnAAEQIu4UOqywwr7E6lgDAf" style="text-align: justify;"><span class="p"> </span></div> <div class="ace-line ace-line old-record-id-doxcnmqke2WgWIcmgsvQWPY3cJd" style="text-align: justify;"><span class="p">王教授于2019年加入中大。她的研究小組一直專注于研究電催化的理解和裝置工程。是次研究獲得研究資助委員會下的杰出青年學(xué)者計劃支持。</span></div> </div>

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