The origin of the Proto-Indo-European nominal accent-ablaut paradigms

In this paper, I will discuss the origin of the different nominal accent-ablaut paradigms that can be reconstructed for (late) Proto-Indo-European, and argue that new insights into several peculiarities of the Hittite nominal case system may have interesting consequences for this topic. In order to do so, it is important that we first have a good understanding of the nature and development of Proto-Indo-European ablaut and its correlation with accent.NWO276-70-026Descriptive and Comparative Linguistic

Hittite ‘water’

Descriptive and Comparative Linguistic

Indo-Aryan -(a)u̯artanna in the Kikkuli treatise

Descriptive and Comparative Linguistic

The Hittite Inherited Lexicon

Hittite was the language of the Hittite Empire that ruled over vast parts of Turkey from 1650 - 1180 BC. It was written in the cuneiform script on clay tablets. Linguistically, it belongs to the Anatolian language group, which is one of the twelve branches of the large Indo-European language family. Within the Indo-European language family, Hittite is the oldest attested language. In over 1200 pages this dissertation describes the history of Hittite in the light of its Indo-European origin. It consists of two parts. Part One, 'Towards a Hittite Historical Grammar', contains a description of the Hittite phoneme inventory and a discussion of the sound laws and morphological changes that have taken place between the Proto-Indo-European and the Hittite language stage. Part Two, 'An Etymological Dictionary of the Hittite Inherited Lexicon', contains etymological treatments of all Hittite words of Indo-European origin. One of the most important conclusions of this dissertation is that the Anatolian language group was the first one to split off from Proto-Indo-European and that all other Indo-European branches have undergone a period of common innovations. Therewith Anatolian, and especially Hittite, occupies a very important position within comparative Indo-European linguistics as it sometimes has retained linguistic information that has been lost in all other Indo-European languagesLEI Universiteit LeidenAnatolische taalkund

The origin of the Hittite ḫi-conjugation

NWO276-70-026Descriptive and Comparative Linguistic

Introduction: reconstructing Proto-Indo-Anatolian and Proto-Indo-Uralic

NWO276-70-026Descriptive and Comparative Linguistic

A Hittite scribal tradition predating the tablet collections of Ḫattuša?: The origin of the ‘cushion-shaped’ tablets KBo 3.22, KBo 17.21+, KBo 22.1, and KBo 22.2

This article discusses the origins of a group of four Hittite OS tablets, which share some unique and peculiar features with respect to their shape, spelling conventions and palaeography. It argues that these four tablets are the oldest documents of the Hittite corpus, and that they were not created in Ḫattuša, but have been imported from elsewhere. Originally, they belonged to an older writing tradition, predating the establishment of Ḫattuša as the Hittite capital. This implies that the royal tablet collections in Ḫattuša do not reflect the very first beginnings of Hittite cuneiform, but only the start of a royal administration there. The typical Hittite ductus was already created in the 18th century BCE – in Kuššara, Nēša or elsewhere in Anatolia.NWO276-70-026Descriptive and Comparative LinguisticsMiddle Eastern Studie

Valorisation of lignin – Achievements of the LignoValue project

Lignocellulosic biorefinery for production of biofuels, materials and chemicals requires valorization of all fractions including lignin. As a consequence of its poly-aromatic structure, lignin potentially serves as a source for aromatic chemicals. The developed biorefinery concept of the LignoValue project comprises two major steps: (1) Organosolv fractionation of wheat straw and willow into (hemi)cellulose and high purity lignin. (2) Further conversion of the isolated lignin via catalytic pyrolysis, supercritical depolymerization and partial hydrodeoxygenation (HDO) into different components like low molecular phenolic compounds, wood adhesives and fuel additives. The cellulose fraction resulting after organosolv fractionation is effectively hydrolysed by enzymes for biofuel production. Quality assessment of the liberated lignins shows interesting characteristics for follow-up chemistry such as high purity, relatively low molar mass and polydispersity. Catalytic pyrolysis in a fluidised bed at 400-500°C was found to convert organosolv lignin in 35-55% phenolic oil, 10% identified monomeric phenolic compounds, 10-20% water, 5-20% gas and 35-55% char. Supercritical depolymerisation of lignin in carbon dioxide based solvents resulted in a similar spectrum of products, however, at a lower temperature (ca 300°C) but at higher pressures. In both thermochemical processes the use of promotors or catalysts lead to an improved yield of the target monomeric aromatic products. Also the residual char fraction shows interesting properties for use in bio-char applications. Catalytic semi-continuous HDO of lignin in hydrogen atmosphere can be manipulated to yield both light oils or heavy oils as potential additives to fuels. Suitable catalysts were found to convert depolymerised lignin to phenolic oils in high yields. In this process no char formation is observed. The lignin oils were successfully tested on lab scale as partial substitution of phenol in resins for gluing wood panels. The LignoValue concept is critically reviewed in a techno-economic analysis demonstrating the potential for further commercial development and adoptation of this innovative biorefinery process in Europe

Catalytic hydrotreatment of fast pyrolysis liquids in batch and continuous set-ups using a bimetallic Ni-Cu catalyst with a high metal content

In this paper, an experimental study on the hydrotreatment of fast pyrolysis liquids is reported in both batch and continuous set-ups using a novel bimetallic Ni-Cu based catalyst with high Ni loading (up to 50%) prepared by a sol-gel method. The experiments were carried out in a wide temperature range (80-410 degrees C) and at a hydrogen pressure between 100-200 bar to determine product properties and catalyst performance as a function of process conditions. To gain insight into the molecular transformations, the product oils were analysed by GC x GC, H-1-NMR and GPC and reveal that the sugar fraction is reactive in the low temperature range (300 degrees C). In addition, the organic acids are very persistent and reactivity was only observed above 350 degrees C. The results are rationalized using a reaction network involving competitive hydrogenation of reactive aldehydes and ketones of the sugar fraction of fast pyrolysis liquids and thermal polymerisation. In addition, relevant macro-properties of the product oils including flash point (30 to 80 degrees C), viscosity (0.06 to 0.93 Pa s) and TG residue