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chenwc319木蟲 (正式寫手)
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[求助]
求助SBA-15合成,急求。。。! 已有2人參與
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有2個(gè)問(wèn)題請(qǐng)教: 1.Pluronic P123, 從西格瑪購(gòu)買,分子量5800,CAS號(hào)碼9003-11-6。用這個(gè)P123合成SBA-15可否? 2.將2克這個(gè)P123溶解于2M HCl中 60毫升 38攝氏度,攪拌,如何能溶解的更好。發(fā)現(xiàn)不太溶解?這種現(xiàn)象是否正常? |
木蟲 (正式寫手)
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這么合成的 您了解不2 g of Pluronic P123 (EO20PPO70EO20) was dissolved in 60 ml of 2M HCl at 38 C. Tetraethylorthosilicate (4.2 g) was added to the above solution with vigorous stirring. The mixture was stirred for only 6 min and remained quiescent for 24 h at 38 C. The mixture was subsequently heated at 100 C for another 24 h in an autoclave. The as-synthesized SBA-15 with short-rod morphology was collected by filtration, dried and calcined at 550 C in air. |
木蟲 (正式寫手)
金蟲 (初入文壇)
| 可以試試先將P123先將溶到去離子水中后再加鹽酸,然后攪拌時(shí)間大概4小時(shí)的樣子。原來(lái)做過(guò),用的Sigma-Aldrich公司的,也并沒有發(fā)現(xiàn)不溶的現(xiàn)象。。。 |

木蟲 (正式寫手)
木蟲 (正式寫手)
金蟲 (初入文壇)
專家顧問(wèn) (知名作家)
學(xué)習(xí)使人進(jìn)步
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專家經(jīng)驗(yàn): +1781 |

金蟲 (正式寫手)
木蟲 (正式寫手)
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2 g of Pluronic P123 (EO20PPO70EO20) was dissolved in 60 ml of 2M HCl at 38 C. Tetraethylorthosilicate (4.2 g) was added to the above solution with vigorous stirring. The mixture was stirred for only 6 min and remained quiescent for 24 h at 38 C. The mixture was subsequently heated at 100 C for another 24 h in an autoclave. The as-synthesized SBA-15 with short-rod morphology was collected by filtration, dried and calcined at 550 C in air.我是根據(jù)這個(gè)文獻(xiàn)合成的 合成SBA-15有很多種 我只需要這個(gè)形貌的,不知道您了解不 |
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