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A New Species of Ginkgo with Male Cones and Pollen Grains in situ from the Middle Jurassic of Eastern Xinjiang,China

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Acta Geologica Sinica(English Edition) 2017年第1期91卷 9-21页

作者： WANG Zixi SUN Fankai JIN Peihong chen yingquan chen Jingwei DENG Peng YANG Guolin SUN Bainian School of Earth Sciences & Key Laboratory of Mineral Resources in Western China (Gansu Province) Lanzhou University Key Laboratory of Petroleum Resources Gansu ProvinceChinese Academy of Sciences

Well-preserved Ginkgo pollen organs are analyzed from the Middle Jurassic Xishanyao Formation of the Turpan–Hami Basin, Xinjiang Uygur Autonomous Region, northwestern China, and are described as a new species, Ginkgo hamiensis Z.X. Wang et B.N. Sun sp. nov. The immature male cones are cylindrical and catkin-like, with two longitudinal stripes on the stalk. The pollen sacs are shaped like a long oval with two pollen sacs fused together for each microsporophyll, and the microsporophyll tip is a triangular cystidium. The pollen grains are oblong or fusiform and monocolpate; both ends are blunt or sharp. By comparison with previously reported fossil records of Ginkgo plants, we determined that the current fossils are different from all other reported species; thus, the present fossil is referred to as a new species of Ginkgo. The reproductive organs of the Ginkgo fossils described herein can provide valuable information for the study of Ginkgo plants. Further, there are two probable evolutionary trends in the Ginkgo pollen cones. One trend is that the number of pollen sacs changed from three or four during the Jurassic and Cretaceous to two at the present day; the other is that the number of pollen sacs has remained two from the Middle Jurassic to the present day. In addition, the pollen cones described herein are similar to the pollen cones of the extant Ginkgo, which strongly indicates that the morphology of Ginkgo plants may have remained highly conserved over millions of years.

关键词： Ginkgo hamiensis Pollen cones Middle Jurassic Xinjiang Uygur Autonomous Region Systematic evolution

Physicochemical and adsorption properties of biochar from biomass-based pyrolytic polygeneration:effects of biomass species and temperature

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Biochar 2021年第4期3卷 657-670页

作者： Zhang Xiong Zheng Huanhuan Wu Jing chen Wei chen yingquan Xuezhi Gao Yang Haiping chen Hanping State Key Laboratory of Coal Combustion School of Energy and Power EngineeringHuazhong University of Science and Technology1037 Luoyu RoadWuhan 430074HubeiPeople’s Republic of China Department of New Energy Science and Engineering School of Energy and Power EngineeringHuazhong University of Science and TechnologyWuhan 430074People’s Republic of China Changyi Environmental Monitoring Station 520 Jiaotong streetChangyiWeifangShandongPeople’s Republic of China

Biochar obtained from a biomass pyrolytic polygeneration technology exhibits great potential as an adsorbent,because of its renewability,porosity and desirable surface chemical *** temperature and feed are important elements in the preparation of ***,the effects of these factors on the physicochemical properties of biochar were investigated in this *** adsorption of biochar was evaluated using water,CO_(2),phenol,and methylene blue(MB)as *** correlation between adsorption capacity and physicochemical properties was determined using the Pearson *** indicated that temperature could significantly affect the structure of *** effects of biomass species were also noticeable as *** number of macropores and their contribution to the total surface area for cotton stalk,bamboo,and rapeseed stalk increased with an increase in temperatures,meanwhile,the number of micropores decreased at high *** the same temperature,the macropore,mesopore,and micropore components of biochar produced by different species were markedly *** water adsorption and CO_(2) adsorption of biochar were close to those of commercial activated carbon(AC),whereas the adsorption capacity of untreated biochar on phenol and MB was less than that of *** exerted more significant effects on the adsorption capacity of biochar,compared with functional *** surface area of the micropores exhibited a significant positive correlation with the adsorption of CO_(2),phenol,and *** hydroxyl group was positively correlated with water adsorption.

关键词： Biomass types Biomass pyrolytic polygeneration Biochar Physicochemical properties Adsorption

Highly efficient chemicalproductionviaelectrified,transient high-temperature synthesis

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eScience 2024年第4期4卷 41-53页

作者： Yichen Dong Yi Rao Hanwen Liu Hao Zhang Rong Hu yingquan chen Yonggang Yao Haiping Yang State Key Laboratory of Coal Combustion School of Energy and Power EngineeringHuazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China

In response to the current energy and environmental challenges,reducing or replacing reliance on fossil fuels and striving for carbon neutrality seems to be the only viable ***,a cutting-edge,eco-friendly method of chemical synthesis via transient Joule heating(JH)demonstrated significant promise across various domains,including methane reforming,ammonia synthesis,volatile organic compounds removal,plastic recycling,the synthesis of functional carbon materials from repurposed solid waste,*** this review,the advantages,and latest developments in thermochemical synthesis by flash and transient JH are comprehensively *** the ongoing heating process of conventional furnaces that consume fossil fuels,dynamic and transient JH can get significantly higher reaction rates,energy efficiency,flexibility,and ***,the transient reaction mechanism,data science optimization,and scale-up production models are discussed,and prospects for the integration of the electrified chemical industry with renewable energy for carbon neutrality and long-term energy storage are also envisioned.

关键词： Electrified chemicalsynthesis Transient heating Low-carbon production Gas-phasereaction Solid waste

Catalytic hydrogenolysis of organosolv lignin: Cleaving C–O bonds over CuMgAlO_(x)-layered porous metal oxide catalysts for oriented monophenols production

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Green Carbon 2024年第2期2卷 211-220页

作者： Juping Liu Yang Yang Ziyue Tang yingquan chen Hanping chen Xianhua Wang Haiping Yang State Key Laboratory of Coal Combustion Huazhong University of Science and Technology WuhanHubei 430074China

To understand the catalytic conversion of lignin into high-value products,lignin depolymerization was performed using a layered polymetallic oxide(CuMgAlO_(x))*** effects of the conversion temperature,hydrogen pressure,and reaction time were studied,and the ability of CuMgAlO_(x)to break the C–O bond was *** CuMgAlO_(x)(Mg/Al=3:1)catalyst contained acidic sites and had a relatively homogeneous elemental distribution with a high pore size and specific surface ***β-O-4 was almost completely converted by disassociating the C–O bond,resulting in yields of 14.74%ethylbenzene,47.58%α-methylphenyl ethanol,and 36.43%*** highest yield of lignin-derived monophenols was 85.16%under reaction conditions of 280℃ and 3 Mpa for 4 *** the reaction progressed,depolymerization and condensation reactions occurred *** temperatures(>280℃)and pressures(>3 Mpa)tended to produce solid *** study establishes guidelines for the high-value application of industrial lignin in the catalytic conversion of polymetallic oxides.

关键词： Lignin Catalytic depolymerization Monophenols CuMgAlO_(x) Layered polymetallic oxide catalyst

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废塑料催化热解制备碳纳米管等高值产品研究

华中科技大学学报（自然科学版） 2023年第1期51卷 156-162页

作者：蔡宁陈应泉杨海平陈汉平华中科技大学能源与动力工程学院湖北武汉430074

以过渡金属铁、钴和镍单金属或双金属为催化剂活性组分,研究聚丙烯废塑料的催化热解行为,探究催化剂活性金属组分及其与载体间的相互作用对催化热解产物分布和品值特性的影响.研究结果表明:单金属催化剂中钴活性最好,促进液体产物向积... 详细信息

以过渡金属铁、钴和镍单金属或双金属为催化剂活性组分,研究聚丙烯废塑料的催化热解行为,探究催化剂活性金属组分及其与载体间的相互作用对催化热解产物分布和品值特性的影响.研究结果表明:单金属催化剂中钴活性最好,促进液体产物向积碳转化分别得到质量分数约10%液体油及33%积碳.铁催化剂所得积碳石墨化程度较高,碳纳米管产率最高,约20%,而镍催化剂活性相对较差,得到更多液体油产物.相比单金属,双金属催化剂中铁钴具有协同作用,表现出更高催化活性,促进积碳和氢气形成,得到最大积碳和氢气产率,分别可达35%和49%;铁镍催化剂次之,积碳和氢气产率分别为33%和46%;钴镍双金属催化剂未形成合金,对催化过程并无明显提升作用.

关键词：废塑料催化热解碳纳米管富氢气体芳香烃

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生物质高值化利用研究综述

华中科技大学学报（自然科学版） 2022年第7期50卷 79-88页

作者：邹俊陈应泉杨海平陈汉平华中科技大学煤燃烧国家重点实验室湖北武汉430074

从生物质气化、催化热解及功能碳材料制备出发,综述了过程工艺、原料种类、催化剂种类对低碳生物质基富氢合成气、化学品及炭基材料产物的影响,建立了生物质热化学转化高值化利用调控机制.结合热解多联产工艺,对生物质全组分综合利用进... 详细信息

从生物质气化、催化热解及功能碳材料制备出发,综述了过程工艺、原料种类、催化剂种类对低碳生物质基富氢合成气、化学品及炭基材料产物的影响,建立了生物质热化学转化高值化利用调控机制.结合热解多联产工艺,对生物质全组分综合利用进行了展望:生物质热解多联产技术能协同制备炭、气、油产品,是生物质综合利用的重要途径,但产物品质依然可以大幅提升;生物质三组分具有不同的目标产物导向,通过预处理分离三组分能改善产物品质,但成本高、技术不成熟,须深入探究预处理过程,优化预处理工艺;复合催化剂/吸附剂对于焦油转化、CO_(2)原位捕集及提高H_(2)产率作用显著,催化剂和活化剂对于生物质热解表现出较好的催化脱氧和活化扩孔效果,但常规催化剂效率低、不稳定、易失活等缺点制约了工业化发展,须加强新型高效、稳定及绿色催化剂的开发,强化反应参数与催化剂的协同优化.

关键词：生物质气化技术催化热解炭化技术热解多联产

超电容电极用生物质多孔炭分级孔构造研究进展

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中国电机工程学报 2019年第3期39卷 885-894,967页

作者：陈汉平夏明巍陈应泉陈伟杨海平煤燃烧国家重点实验室(华中科技大学) 湖北省武汉市430074

生物质具有环境友好、来源丰富以及天然分级结构等特性,在超电容电极用电极材料制备研究领域受到了广泛的关注。相互连通且具有不同尺度孔隙的分级多孔结构有利于提高超级电容器的电容性能及倍率特性。大量的研究工作通过选取不同种类... 详细信息

生物质具有环境友好、来源丰富以及天然分级结构等特性,在超电容电极用电极材料制备研究领域受到了广泛的关注。相互连通且具有不同尺度孔隙的分级多孔结构有利于提高超级电容器的电容性能及倍率特性。大量的研究工作通过选取不同种类生物质、探究各种制备方法来制备生物质基分级多孔炭,目前以生物质基多孔炭为电极材料的超级电容器的性能基准已经从约200F/g(1A/g)提高到了约300F/g(1A/g)。该文总结了生物质基分级多孔炭超电容电极材料制备的研究进展,讨论总结了生物质原料特性对结构构造的正面效果,对涉及到的制备方法进行了回顾与展望,并着重介绍了环境友好的绿色造孔方法(尤其是低毒低腐蚀活化剂)的最新进展。

关键词：生物质超级电容器多孔炭材料分级多孔结构绿色造孔方法

m^(6)A mRNA修饰在心血管疾病中作用的研究进展

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医学研究与战创伤救治 2023年第7期36卷 775-779页

作者：陈映泉(综述) 钟勇(审校) 南京医科大学金陵临床医学院(东部战区总医院)心血管内科南京210002

N6-甲基腺苷(m 6 A)甲基化修饰受甲基转移酶、去甲基化酶和甲基化识别蛋白的动态调节,在表观遗传机制中发挥重要作用,可通过调控mRNA修饰参与包括心血管疾病在内的多种衰老相关疾病的发生发展。文章主要就m 6 A mRNA修饰对心血管衰老的... 详细信息

N6-甲基腺苷(m 6 A)甲基化修饰受甲基转移酶、去甲基化酶和甲基化识别蛋白的动态调节,在表观遗传机制中发挥重要作用,可通过调控mRNA修饰参与包括心血管疾病在内的多种衰老相关疾病的发生发展。文章主要就m 6 A mRNA修饰对心血管衰老的影响以及在心血管疾病中的作用机制及作为生物标志物和治疗靶点的应用前景进行综述。

关键词： N6-甲基腺苷心血管疾病心血管衰老生物标志物治疗靶点

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棉杆热解过程中焦孔隙结构演变及分形特征

中国电机工程学报 2012年第S1期32卷 115-120页

作者：李开志杨海平陈应泉陈汉平王贤华煤燃烧国家重点实验室(华中科技大学) 湖北省武汉市430074

为了解生物质热解过程中固体焦孔隙结构的演变行为,采用氮气等温吸附法研究了热解过程中棉杆颗粒孔隙结构的变化规律,并引入分形维数对其进行定量的描述。结果表明,热解过程中棉杆焦孔隙结构微孔与中孔先增多后减少,而大孔比例变化不大... 详细信息

为了解生物质热解过程中固体焦孔隙结构的演变行为,采用氮气等温吸附法研究了热解过程中棉杆颗粒孔隙结构的变化规律,并引入分形维数对其进行定量的描述。结果表明,热解过程中棉杆焦孔隙结构微孔与中孔先增多后减少,而大孔比例变化不大。棉杆热解焦的BET比表面积(SBET)随着热解温度的升高,经历了一个先增大后减小的过程,从450℃开始,SBET迅速增大,在650℃时达到最大值,而后逐渐减小。随着热解温度的升高,棉杆焦表面分形维数先增大后减小,表明棉杆焦在热解过程中孔隙表面经历了复杂的结构变化。分形维数与BET比表面积存在一定的关联性,且分形维数能更好地表征热解焦表面孔隙结构特征。

关键词：生物质棉杆热解孔隙结构分形维数