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| 1 | 湿磨法制备纳米Li_4SiO_4材料用于高温捕集CO_2显示文摘采用不同硅源、锂源以湿磨法结合高温焙烧制备了纳米Li_4SiO_4材料,利用X射线衍射(XRD)、扫描电子显微镜(SEM)和透射电子显微镜(TEM)表征了合成材料的结构和表面形貌,利用热重分析仪(TG)研究了Li_4SiO_4材料高温下的CO_2吸收性能和循环使用稳定性。结果表明,湿磨法制备的Li_4SiO_4材料在550℃、2.5×104Pa下,10min可达吸收平衡,平衡吸收量为27.9%(质量分数),经五次吸收-解吸后仍保持初始吸收性能,显示了良好的循环稳定性。将25%CO_2-25%N2-50%He混合气通过Li_4SiO_4材料床层,发现在550℃下,CO_2能被高效捕集,在相对湿度为10%的水汽存在下,Li_4SiO_4捕集CO_2的性能没有明显下降。 | 黄雪芹 肖强 钟依均 朱伟东 | 2016 | 燃料化学学报2016，44，9： | 2 |
| 2 | Efficient MgO-doped CaO sorbent pellets for high temperature CO_(2) capture显示文摘Novel MgO-doped CaO sorbent pellets were prepared by gel-casting and wet impregnation.The effect of Na^(+) and MgO on the structure and CO_(2) adsorption performance of CaO sorbent pellets was elucidated.MgOdoped CaO sorbent pellets with the diameter range of 0.5-1.5 mm exhibited an excellent capacity for CO_(2) adsorption and adsorption rate due to the homogeneous dispersion of MgO in the sorbent pellets and its effects on the physical structure of sorbents.The results show that MgO can effectively inhibit the sintering of CaO and retain the adsorption capacity of sorbents during multiple adsorption-desorption cycles.The presence of mesopores and macropores resulted in appreciable change of volume from CaO(16.7 cm^(3)·mol^(-1))to CaCO3(36.9 cm^(3)·mol^(-1))over repeated operation cycles.Ca2Mg1 sorbent pellets exhibited favorable CO_(2) capture capacity(9.49 mmol·g^(-1)),average adsorption rate(0.32 mmol·g^(-1)·min^(-1)) and conversion rate of CaO(74.83%) after 30 cycles. | Zhihong Xu Tao Jiang Hao Zhang Yujun Zhao Xinbin Ma Shengping Wang | 2021 | Frontiers of Chemical Science and Engineering2021，15，3： | 2 |
| 3 | 纳米正硅酸锂的合成、表征及CO_2吸附性能研究显示文摘利用沉淀法合成纳米级高温CO_2吸附剂,并对其进行了表征和吸附性能研究。发现该吸附剂颗粒小而均匀,导致焙烧温度和脱附温度均显著降低,从而大大降低过程能耗。在低体积分数CO_2(12.5%)气氛中采用热重法进行动态循环实验,5 min后CO_2吸附容量可达17.8%。且利用双指数模型对吸附剂不同温度的静态吸附曲线进行拟合,发现纳米级吸附剂有利于体相Li向外层扩散。提供了一种简单有效的方法合成纳米吸附剂,吸附速度快,在流化床变温吸附工艺中对工业烟气的大规模捕集有潜在的应用前景。 | 王平平 刘丹 杨丽霞 张鹏 刘成伟 | 2018 | 石油化工高等学校学报2018，31，5： | 1 |
| 4 | 锂基高温二氧化碳吸收剂制备研究进展显示文摘首先介绍了CO_2捕集的背景;然后讨论了锆酸锂和硅酸锂等锂基高温CO_2吸收剂捕集CO_2的机理;重点介绍了近几年来锂基高温CO_2吸收剂的一些制备方法,并对不同方法制备的纳米锂基高温CO_2吸收剂的性能进行了比较;最后,从合成方向、CO_2吸收性能与吸收剂电导率的关联及在高温原位捕集CO_2中的应用3个方面,对锂基高温CO_2吸收剂的研究前景进行了展望. | 肖强 韩继梅 张富民 钟依均 朱伟东 | 2017 | 浙江师范大学学报(自然科学版)2017，40，2： | 1 |
| 5 | Theoretical and experimental study on the fluidity performance of hard-to-fluidize carbon nanotubes-based CO_(2) capture sorbents显示文摘Carbon nanotubes-based materials have been identified as promising sorbents for efficient CO_(2)capture in fluidized beds,suffering from insufficient contact with CO_(2)for the high-level CO_(2)capture capacity.This study focuses on promoting the fluidizability of hard-to-fluidize pure and synthesized silica-coated amine-functionalized carbon nanotubes.The novel synthesized sorbent presents a superior sorption capacity of about 25 times higher than pure carbon nanotubes during 5 consecutive adsorption/regeneration cycles.The low-cost fluidizable-SiO_(2)nanoparticles are used as assistant material to improve the fluidity of carbon nanotubes-based sorbents.Results reveal that a minimum amount of 7.5 and 5 wt%SiO_(2)nanoparticles are required to achieve an agglomerate particulate fluidization behavior for pure and synthesized carbon nanotubes,respectively.Pure carbon nanotubes+7.5 wt%SiO_(2)and synthesized carbon nanotubes+5 wt%SiO_(2)indicates an agglomerate particulate fluidization characteristic,including the high-level bed expansion ratio,low minimum fluidization velocity(1.5 and 1.6 cm·s^(–1)),high Richardson−Zaki n index(5.2 and 5.3>5),and lowΠvalue(83.2 and 84.8<100,respectively).Chemical modification of carbon nanotubes causes not only enhanced CO_(2)uptake capacity but also decreases the required amount of silica additive to reach a homogeneous fluidization behavior for synthesized carbon nanotubes sorbent. | Mahsa Javidi Nobarzad Maryam Tahmasebpoor Mohammad Heidari Covadonga Pevida | 2022 | Frontiers of Chemical Science and Engineering2022，16，10： | 0 |
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