Creation of Brønsted acid sites on Sn-based solid catalysts for the conversion of biomass

Hydroxyl-attached Sn species are highly dispersed on the surface of mesoporous silica (SBA-15) by the grafting of dimethyldichlorostannane followed by calcination to transform the methyl groups into hydroxyl groups (S–Sn–OH). S–Sn–OH has both Lewis and Brønsted acidic sites, resulting in superior catalytic activities in the acetalisation of glycerol

Nanocarbon-based catalysts to open new possibilities for sustainable production

Nanocarbon-based catalysts to open new possibilities for sustainable productio

Direct Dehydrogenation of Ethylbenzene over Nanodiamonds @ Nitrogen-doped Mesoporous Carbon Hybrid Composites

Direct Dehydrogenation of Ethylbenzene over Nanodiamonds @ Nitrogen-doped Mesoporous Carbon Hybrid Composite

Controlled synthesis of iron oxide nanorods and application in deNOx reactio

Controlled synthesis of iron oxide nanorods and application in deNOx reacti

Dual-heteroatom-modified ordered mesoporous carbon: Hydrothermal functionalization, structure, and its electrochemical performance

The diverse applications of ordered mesoporous carbons (OMCs) are not only bonded to their superior structural properties, but also to their chemical properties. The termination of graphene sheets in OMCs provides abundant sites for heteroatom decoration to mediate their chemical properties. In this contribution, boron and phosphorus were co-incorporated into OMCs via a facile aqueous self-assembly taking advantage of a hydrothermal doping strategy. The as-obtained B/P-modified OMCs process a large surface area of ca. 600 m(2) g(-1), and a uniform pore size of ca. 6.3 nm, as well as long range ordering. By varying the hydrothermal synthesis temperature, the concentration of B and P introduced can be controlled from 0.8 to 1.6 wt% and from 2.3 to 3.6 wt%, respectively. The interaction of heteroatom B and P was enhanced when the hydrothermal temperature is above 100 degrees C. The heteroatom-containing groups were firmly embedded and homogeneously distributed on the carbon frameworks. When the B/P co-modified OMCs were applied as electrodes in supercapacitors, they presented promising performance compared with B- or/and P-modified OMC obtained without hydrothermal treatment

氧化铁纳米棒的制备及在NOx消除中的应用

Synthesis of Iron Oxide Nanorods and Application in NOx Abatemen

Aromatic sulfide, sulfoxide, and sulfone mediated mesoporous carbon monolith for use in supercapacitor

Monoliths of aromatic sulfur mediated mesoporous carbon were fabricated via an aqueous self-assembly strategy and the species of sulfide, sulfoxide, and sulfone on the surface can be tuned rationally. The resultant S-doped mesoporous carbon exhibited superior performance as supercapacitor electrodes. The controllable modulation of sulfur species provided a possibility to clearly understand the role sulfur playing and allowed mechanistic insight into material requirements for high performance capacitors. (C) 2012 Elsevier Ltd. All rights reserved

1995～2011年CERN土壤环境元素含量数据集

土壤环境是地球环境的重要组成部分。目前土壤环境问题的关注重点在于土壤污染。我国土壤污染以无机污染为主。中国生态系统研究网络(Chinese Ecosystem Research Network,CERN)自1988年组建以来,在中国主要农田、森林、草原、荒漠、湿地生态系统中,按统一的规范,对与土壤环境状况有关的铁、锰、铜、锌、硼、钼、镉、铬、铅、镍、汞、砷、硒元素进行了长期定位监测。通过对CERN典型生态样地表层土壤环境元素监测数据进行加工处理,获得1995～2011年中国陆地生态系统土壤环境元素含量数据集。本数据集中13种土壤环境元素指标测定的相对误差平均为6.55%,重复测定的相对偏差为7.70%。同时附有完整的背景信息,保证了数据在空间和时间上的一致性。本数据集可以为全国和区域土壤环境质量评估、土壤污染风险评价以及环境土壤学研究等工作提供数据基础