{"id":3906,"date":"2020-04-09T23:59:39","date_gmt":"2020-04-09T15:59:39","guid":{"rendered":"http:\/\/woodrefinery.com\/zhenfang\/?p=3906"},"modified":"2020-05-04T10:51:14","modified_gmt":"2020-05-04T02:51:14","slug":"subcritical-water-gasification-of-lignocellulosic-wastes-for-hydrogen-production-with-coni-al2o3","status":"publish","type":"post","link":"https:\/\/woodrefinery.com\/zhenfang\/subcritical-water-gasification-of-lignocellulosic-wastes-for-hydrogen-production-with-coni-al2o3\/","title":{"rendered":"Subcritical water gasification of lignocellulosic wastes for hydrogen production with CoNi\/Al2O3"},"content":{"rendered":"

Subcritical water gasification of lignocellulosic wastes for hydrogen production with CoNi\/Al2<\/sub>O3<\/sub><\/strong><\/p>\n

Recently, master student Mr. Jie Sun supervised by Prof. Zhen Fang collaborated with Profs. JA Kozinski at Waterloo and AK Dalai at U of Saskatchewan in Canada, published a research article in J Supercrit Fluids about hydrogen production from lignocellulosic wastes with CoNi\/Al2<\/sub>O3<\/sub> catalysts.<\/p>\n

Nickel-based catalysts with different supports and cobalt loadings were synthesized for hydrothermal gasification of cellulose 350 o<\/sup>C. The activity of Ni catalysts was found in the order of Al2<\/sub>O3<\/sub> > spent bleaching clay ash > SiO2<\/sub> with H2<\/sub> yield of 80.6%, 69.0% and 57.0% and the prepared catalyst using Al2<\/sub>O3<\/sub> as the support showed the highest catalytic activity to produce H2<\/sub>. When 6 wt. % Co was added, H2<\/sub> yield reached the maximum value of 88.4%, which was 1.44 times than that of 10Ni\/Al2<\/sub>O3<\/sub> catalyst without adding Co. Catalysts were characterized by NH3<\/sub>-TPD, TPR, XRD, BET and XPS, showing that Ni-Co alloy formation promoted H2<\/sub> production. Furthermore, the effect of parameters such as feedstock usage and residence time were also investigated systematically with 10Ni-6Co\/Al2<\/sub>O3<\/sub> catalyst and the results indicated that the optimal yield of H2<\/sub> at 94.9% was obtained at the conditions of 0.5g cellulose usage and 20 min residence time. Finally, the study about different lignocellulosic wastes (rice straw, peanut shells and cotton straw) with the increase in H2<\/sub> yield by 51.4, 76.0 and 67.8 times and cotton straw obtained the highest H2<\/sub> yield of 82.6%. Ni-Co\/Al2<\/sub>O3<\/sub> catalysts enhanced hydrothermal gasification of lignocellulosic wastes.<\/p>\n

Related results were accepted in J Supercrit Fluids:<\/p>\n

J Sun, L Xu, GH Dong, S Nanda, H Li, Zhen Fang*<\/strong>, JA Kozinski, AK Dalai, Subcritical water gasification of lignocellulosic wastes for hydrogen production with Co modified Ni\/Al2<\/sub>O3<\/sub> catalysts. J Supercrit Fluids, https:\/\/doi.org\/10.1016\/j.supflu.2020.104863<\/a> , 162<\/strong>, 104863, <\/em>2020.<\/strong><\/span><\/p>\n

\"\"<\/p>\n

Catalytic hydrothermal gasification of cotton straw with H2<\/sub> yield of 82.6% over NiCo\/Al2<\/sub>O3<\/sub> catalyst at 350 o<\/sup>C and 20 min.\uff08NiCo\/Al2<\/sub>O3<\/sub>\u50ac\u5316\u5242\u5728350 o<\/sup>C\u548c20 min\u6761\u4ef6\u4e0b\u50ac\u5316\u68c9\u82b1\u79f8\u79c6\u6c34\u70ed\u6c14\u5316, H2<\/sub>\u4ea7\u7387\u4e3a82.6%\u3002\uff09<\/p>\n

CoNi\/Al2<\/sub>O3<\/sub><\/strong>\u50ac\u5316\u5242\u5728\u4e9a\u4e34\u754c\u6c34\u4e2d\u6c14\u5316\u6728\u8d28\u7ea4\u7ef4\u7d20\u5e9f\u5f03\u7269\u5236\u6c22<\/strong><\/p>\n

\u6700\u8fd1\uff0c\u7855\u58eb\u751f\u5b59\u6770\u5728\u65b9\u8001\u5e08\u7684\u6307\u5bfc\u4e0b\uff0c\u4e0e\u52a0\u62ff\u5927\u6ed1\u94c1\u5362\u5927\u5b66JA Kozinski\u9662\u58eb\u548c\u8428\u65af\u5361\u5f7b\u6e29\u5927\u5b66AK Dalai\u9662\u58eb\u5408\u4f5c\uff0c\u5728\u56fd\u9645\u5b66\u672f\u671f\u520aJ Supercrit Fluids\u53d1\u8868\u4ee5Co\u6539\u6027Ni\/Al2<\/sub>O3<\/sub>\u50ac\u5316\u5242\u4ece\u6728\u8d28\u7ea4\u7ef4\u7d20\u5e9f\u5f03\u7269\u4e2d\u5236\u53d6\u6c22\u6c14\u7684\u7814\u7a76\u6027\u8bba\u6587\u3002<\/p>\n

\u5408\u6210\u4e86\u5177\u6709\u4e0d\u540c\u8f7d\u4f53\u548c\u94b4\u8f7d\u91cf\u7684\u954d\u57fa\u50ac\u5316\u5242\uff0c\u7528\u4e8e350 o<\/sup>C\u6761\u4ef6\u4e0b\u7ea4\u7ef4\u7d20\u7684\u6c34\u70ed\u6c14\u5316\u3002 Ni\u50ac\u5316\u5242\u7684\u6d3b\u6027\u6839\u636e\u8f7d\u4f53\u6765\u6392\u5e8f\u4f9d\u6b21\u4e3aAl2<\/sub>O3<\/sub>\u3001SBC ash \uff08\u5e9f\u767d\u571f\u7070\uff09\u3001SiO2<\/sub>\uff0c\u5bf9\u5e94\u7684H2<\/sub>\u4ea7\u7387\u5206\u522b\u4e3a80.6%\uff0c69.0%\u548c57.0%\uff0c\u4e14\u4ee5Al2<\/sub>O3<\/sub>\u4f5c\u4e3a\u8f7d\u4f53\u5236\u5907\u7684\u50ac\u5316\u5242\u5177\u6709\u6700\u9ad8\u7684\u4ea7\u6c22\u50ac\u5316\u6d3b\u6027\u3002\u5f53Co\u7684\u8d1f\u8f7d\u91cf\u4e3a6 wt. %\u65f6\uff0cH2<\/sub>\u4ea7\u7387\u8fbe\u5230\u6700\u5927\u503c\uff0c\u4e3a88.4\uff05\uff0c\u662f\u4e0d\u6dfb\u52a0Co\u768410Ni\/Al2<\/sub>O3<\/sub>\u50ac\u5316\u5242H2<\/sub>\u4ea7\u7387\u76841.44\u500d\u3002NH3<\/sub>-TPD\uff0cTPR\uff0cXRD\uff0cBET\u548cXPS\u7b49\u7279\u5f81\u5206\u6790\uff0c\u8868\u660eNi-Co\u5408\u91d1\u7684\u5f62\u6210\u4fc3\u8fdb\u4e86H2<\/sub>\u7684\u4ea7\u751f\u3002\u6b64\u5916\uff0c\u8fd8\u4ee510Ni-6Co\/Al2<\/sub>O3<\/sub>\u4f5c\u4e3a\u50ac\u5316\u5242\u7814\u7a76\u4e86\u539f\u6599\u7528\u91cf\u548c\u505c\u7559\u65f6\u95f4\u7b49\u53c2\u6570\u7684\u5f71\u54cd\uff0c\u7ed3\u679c\u8868\u660e\uff0c\u5728\u7ea4\u7ef4\u7d20\u7528\u91cf\u548c\u505c\u7559\u65f6\u95f4\u5206\u522b\u4e3a0.5 g\u548c20 min\u7684\u6761\u4ef6\u4e0b\uff0cH2<\/sub>\u4ea7\u7387\u8fdb\u4e00\u6b65\u63d0\u9ad8\u523094.9\uff05\u3002\u6700\u540e\uff0c\u5bf9\u4e0d\u540c\u6728\u8d28\u7ea4\u7ef4\u7d20\u5e9f\u5f03\u7269\uff08\u6c34\u7a3b\u79f8\u79c6\u3001\u82b1\u751f\u58f3\u548c\u68c9\u82b1\u79f8\u79c6\uff09\u7684\u6c14\u5316\u8fdb\u884c\u4e86\u7814\u7a76\uff0cH2<\/sub>\u4ea7\u7387\u5206\u522b\u63d0\u9ad8\u4e8651.4\u300176.0\u548c67.8\u500d\uff0c\u800c\u68c9\u79f8\u79c6\u83b7\u5f97\u6700\u9ad8\u7684H2<\/sub>\u4ea7\u91cf\u4e3a82.6\uff05\u3002 Ni-Co\/Al2<\/sub>O3<\/sub>\u50ac\u5316\u5242\u4fc3\u8fdb\u4e86\u6728\u8d28\u7ea4\u7ef4\u7d20\u5e9f\u5f03\u7269\u6c34\u70ed\u6c14\u5316\u4ea7\u6c22\u3002\u8be6\u60c5\u53ef\u89c1\uff1a<\/p>\n

J Sun, L Xu, GH Dong, S Nanda, H Li, Zhen Fang*<\/strong>, JA Kozinski, AK Dalai, Subcritical water gasification of lignocellulosic wastes for hydrogen production with Co modified Ni\/Al2<\/sub>O3<\/sub> catalysts. J Supercrit Fluids, https:\/\/doi.org\/10.1016\/j.supflu.2020.104863<\/a> , 162<\/strong>, 104863, <\/em>2020<\/strong><\/span>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Subcritical water gasification of lignocellulosic waste […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/posts\/3906"}],"collection":[{"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/comments?post=3906"}],"version-history":[{"count":5,"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/posts\/3906\/revisions"}],"predecessor-version":[{"id":3943,"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/posts\/3906\/revisions\/3943"}],"wp:attachment":[{"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/media?parent=3906"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/categories?post=3906"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/tags?post=3906"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}